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White House 2016: Democratic Nomination See also: Rating the contenders

Investor's Business Daily/TIPP Poll. May 31-June 5, 2016. N=351 registered voters nationwide who are Democrats or lean to the Democratic Party. Margin of error ą 5.3. Notes: The Feb. 2016, survey, included a series of issue questions prior to the presidential primary ballot match-up. Among the topics covered: Whether a special prosecutor should investigate if "Clinton's use of a private email server compromised any intelligence." The Jan. 2016, survey, included a series of issue questions prior to the presidential primary ballot match-up. Among the topics covered: The "investigation by the FBI" into Clinton's use of email, if "the government should control or own key industries," if it's "the government's role to redistribute wealth and income," if "the U.S. is evolving into a socialist state."

"I am going to read you the names of the candidates who are running for the Democratic presidential nomination. If the Democratic presidential primary were held today, whom would you support for the nomination? Would you say [see below], or someone else?" Options rotated

		5/31 - 6/5/16	4/22-28/16	3/28 - 4/2/16	2/19-24/16
		%	%	%	%
	Hillary Clinton	51	49	45	45
	Bernie Sanders	37	43	44	43
	Someone else	8	5	6	5
	Unsure	3	2	3	6
	Refused	-	-	1	1

		1/22-27/16	1/4-8/16	11/30 - 12/4/15	10/24-29/15	9/26 - 10/1/15
		%	%	%	%	%
	Hillary Clinton	50	43	51	48	42
	Bernie Sanders	38	39	33	33	18
	Martin O'Malley	2	2	1	2	1
	Someone else	4	6	6	7	6
	Unsure	5	9	8	8	8
	Refused	1	1	0	2	3
	Joe Biden	n/a	n/a	n/a	n/a	22
	Jim Webb	n/a	n/a	n/a	n/a	1
	Lincoln Chafee	n/a	n/a	n/a	n/a	-

Quinnipiac University. May 24-30, 2016. N=678 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 3.8.

"Who would you like to see win the Democratic nomination for president this year: Hillary Clinton or Bernie Sanders?"

		5/24-30/16	3/16-21/16
		%	%
	Hillary Clinton	53	50
	Bernie Sanders	39	38
	Someone else (vol.)	1	1
	Unsure/No answer	7	10

ABC News/Washington Post Poll. May 16-19, 2016. N=373 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.5.

"Who would you like to see win the Democratic nomination for president this year: Hillary Clinton or Bernie Sanders?" If unsure: "Which candidate are you leaning toward?"

		5/16-19/16	3/3-6/16
		%	%
	Hillary Clinton	56	49
	Bernie Sanders	42	42
	Other (vol.)	1	2
	Neither (vol.)	1	4
	Unsure	1	3

NBC News/Wall Street Journal Poll conducted by Hart Research Associates (D) and Public Opinion Strategies (R). May 15-19, 2016. N=342 Democratic primary voters nationwide. Margin of error ą 5.3.

"And, if the next Democratic primary for president were being held today, which one of the following candidates would you favor: [see below]?" If unsure: "Well, which way do you lean?" Options rotated

		5/15-19/16	4/10-14/16
		%	%
	Hillary Clinton	53	50
	Bernie Sanders	45	48
	Neither (vol.)	2	-
	Unsure	-	2

		3/3-6/16	2/14-16/16	1/9-13/16	12/6-9/15	10/25-29/15
		%	%	%	%	%
	Hillary Clinton	53	53	59	56	62
	Bernie Sanders	44	42	34	37	31
	Other (vol.)	-	-	-	-	1
	Neither (vol.)	1	1	3	2	1
	Unsure	2	4	2	1	2
	Martin O'Malley	n/a	n/a	2	4	3

CBS News/New York Times Poll. May 13-17, 2016. N=371 Democratic primary voters nationwide. Margin of error ą 6.

"Which one of these candidates would you like to see the Democratic Party nominate for president in 2016: [see below]?" Options rotated Prior to 11/15: "Suppose the race for the Democratic Party's presidential nomination in 2016 comes down to the following candidates, which one would you like to see the Democratic Party nominate for president in 2016: [see below]?"

		5/13-17/16	4/8-12/16	3/17-20/16	2/12-16/16
		%	%	%	%
	Hillary Clinton	51	50	50	47
	Bernie Sanders	44	44	45	39
	Someone else (vol.)	-	-	1	-
	None of them (vol.)	3	3	2	4
	Unsure/No answer	2	3	3	10

		1/7-10/16	12/4-8/15	11/6-10/15	10/4-8/15	9/9-13/15
		%	%	%	%	%
	Hillary Clinton	48	52	52	56	58
	Bernie Sanders	41	32	33	32	28
	Martin O'Malley	2	2	5	1	-
	Someone else (vol.)	-	-	1	1	2
	None of them (vol.)	3	5	3	3	2
	Unsure/No answer	6	9	6	4	6
	Jim Webb	n/a	n/a	n/a	2	3
	Lincoln Chafee	n/a	n/a	n/a	1	-
	Lawrence Lessig	n/a	n/a	n/a	-	n/a

CNN/ORC Poll. April 28-May 1, 2016. N=405 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"Who would you MOST like to see win the Democratic nomination for president: [see below]?" Options rotated

		4/28 - 5/1/16	3/17-20/16
		%	%
	Hillary Clinton	51	51
	Bernie Sanders	43	44
	Someone else (vol.)	3	2
	None/No one (vol.)	1	1
	Unsure	2	2

Suffolk University/USA Today. April 20-24, 2016. N=363 likely voters nationwide who say they will participate in or have participated in the Democratic presidential primary or caucus in their state. Margin of error ą 5.1.

"If the Democratic primary for president was held today, and the candidates were Hillary Clinton and Bernie Sanders, for whom would/did you vote: Clinton or Sanders?" Options rotated

		%
	Hillary Clinton	50
	Bernie Sanders	45
	Unsure	4

Fox News Poll conducted by Anderson Robbins Research (D) and Shaw & Company Research (R). April 11-13, 2016. N=450 likely Democratic primary and caucus voters nationwide. Margin of error ą 4.5.

"Please tell me which one of the following candidates you would like to see as the Democratic presidential nominee: [see below]." If unsure: "Well, if you had to decide today, which one would you choose?" Options rotated Note: Follow-up question added June 21-23, 2015.

		4/11-13/16	3/20-22/16	2/15-17/16
		%	%	%
	Hillary Clinton	48	55	44
	Bernie Sanders	46	42	47
	Other (vol.)	-	-	1
	None of above (vol.)	1	2	1
	Unsure	4	1	7

		1/18-21/16	1/4-7/16	12/16-17/15	11/16-19/15	11/1-3/15
		%	%	%	%	%
	Hillary Clinton	49	54	56	55	56
	Bernie Sanders	37	39	34	32	31
	Martin O'Malley	1	3	2	3	2
	Other (vol.)	1	1	1	-	2
	None of above (vol.)	2	1	2	5	4
	Unsure	10	2	4	5	4

		10/10-12/15	9/20-22/15	8/11-13/15	7/30 - 8/2/15	7/13-15/15
		%	%	%	%	%
	Hillary Clinton	45	44	49	51	59
	Bernie Sanders	25	30	30	22	19
	Joe Biden	19	18	10	13	8
	Martin O'Malley	1	2	1	1	1
	Jim Webb	-	1	1	1	1
	Larry Lessig	-	-	n/a	n/a	n/a
	Lincoln Chafee	-	-	-	1	1
	Other (vol.)	1	-	1	1	1
	None of above (vol.)	4	2	3	3	4
	Unsure	5	3	4	6	5

		6/21-23/15	5/31 - 6/2/15	5/9-12/15	4/19-21/15	3/29-31/15
		%	%	%	%	%
	Hillary Clinton	61	57	63	62	61
	Bernie Sanders	15	11	6	4	3
	Joe Biden	11	8	6	9	12
	Andrew Cuomo	3	1	2	3	3
	Jim Webb	2	2	2	-	1
	Martin O'Malley	1	4	-	1	2
	Lincoln Chafee	-	1	-	-	n/a
	Other (vol.)	1	1	1	-	1
	None of above (vol.)	2	2	2	4	3
	Unsure	5	6	6	5	3
	Elizabeth Warren	n/a	7	13	12	11

	Without Biden (Biden supporters allocated based on 2nd choice):

		10/10-12/15
		%
	Hillary Clinton	54
	Bernie Sanders	28
	Martin O'Malley	2
	Jim Webb	1
	Lincoln Chafee	1
	Larry Lessig	-
	Other (vol.)	1
	None of above (vol.)	6
	Unsure	7

Public Religion Research Institute/The Atlantic. March 30-April 3, 2016. N=788 Democratic and Democratic-leaning voters nationwide.

"Which of the following Democratic candidates would you most like to see as the Democratic Party's 2016 nominee for president: [see below]?" Options rotated

		%
	Bernie Sanders	47
	Hillary Clinton	46
	Other/Unsure/Refused	7

McClatchy-Marist Poll. March 29-31, 2016. N=497 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.4.

Democratic Presidential Preference, including those who are leaning toward a candidate:

		3/29-31/16	10/29 - 11/4/15
		%	%
	Bernie Sanders	49	35
	Hillary Clinton	47	57
	Other	1	-
	Unsure	4	4
	Martin O'Malley	n/a	4

Pew Research Center. March 17-27, 2016. N=842 Democratic and Democratic-leaning registered voters nationwide. Margin of error ą 3.8.

"As I name some Democratic candidates for president in 2016, please tell me which one, if any, you would most like to see nominated as the Democratic Party's candidate: [see below]." If unsure: "As of today, who would you say you LEAN toward?" Options rotated

		%
	Hillary Clinton	49
	Bernie Sanders	43
	None (vol.)	4
	Too early to tell (vol.)	2
	Unsure/Refused	2

Bloomberg Politics Poll conducted by Selzer & Company. March 19-22, 2016. N=311 likely Democratic primary and caucus voters nationwide, including those who have already participated. Margin of error ą 5.6.

"Which one of the following Democrats would be your first choice for president: [see below]?" Options rotated

		%
	Bernie Sanders	49
	Hillary Clinton	48
	Unsure	3

Monmouth University Poll. March 17-20, 2016. N=391 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"Who do you support for the Democratic nomination for president: [see below]?" Options rotated 1/16 & earlier: "Who would you support for the Democratic nomination for president if the candidates were [see below]?"

		3/17-20/16	1/15-18/16	12/10-13/15	10/15-18/15
		%	%	%	%
	Hillary Clinton	55	52	59	48
	Bernie Sanders	37	37	26	21
	Other (vol.)	0	0	1	0
	No one (vol.)	2	4	3	3
	Unsure	6	4	8	9
	Martin O'Malley	n/a	2	4	-
	Joe Biden	n/a	n/a	n/a	17
	Larry Lessig	n/a	n/a	n/a	1
	Jim Webb	n/a	n/a	n/a	1
	Lincoln Chafee	n/a	n/a	n/a	-

		8/31 - 9/2/15	7/30 - 8/2/15	7/9-12/15	6/11-14/15	3/30 - 4/2/15
		%	%	%	%	%
	Hillary Clinton	42	52	51	57	60
	Joe Biden	22	12	13	12	16
	Bernie Sanders	20	16	17	12	7
	Martin O'Malley	1	2	1	1	2
	Jim Webb	1	2	1	2	1
	Lincoln Chafee	0	0	0	0	n/a
	Other (vol.)	0	2	0	0	0
	No one (vol.)	4	3	2	2	2
	Unsure	10	11	15	14	12

CNN/ORC Poll. Feb. 24-27, 2016. N=418 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"I'm going to read a list of people who are running in the Democratic primaries for president this year. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president, or if you would support someone else. [See below.]" Options rotated

		2/24-27/16	1/21-24/16	12/17-21/15	11/27 - 12/1/15
		%	%	%	%
	Hillary Clinton	55	52	50	58
	Bernie Sanders	38	38	34	30
	Someone else	3	7	7	7
	None/No one (vol.)	2	1	4	2
	Unsure	2	1	1	1
	Martin O'Malley	n/a	2	3	2

Suffolk University/USA Today. Feb. 11-15, 2016. N=319 likely voters nationwide who say they will participate in the Democratic presidential primary or caucus in their state. Margin of error ą 5.5.

"If the Democratic primary for president was held today, and the candidates were [see below], for whom would you vote or lean toward?" Options rotated

		2/11-15/16	12/2-6/15	9/24-28/15	7/9-12/15
		%	%	%	%
	Hillary Clinton	50	56	41	59
	Bernie Sanders	40	29	23	14
	Other (vol.)	-	-	-	1
	Unsure	10	11	14	16
	Martin O'Malley	n/a	4	0	1
	Joe Biden	n/a	n/a	20	8
	Lincoln Chafee	n/a	n/a	1	-
	Larry Lessig	n/a	n/a	-	n/a
	Jim Webb	n/a	n/a	-	2

Quinnipiac University. Feb. 10-15, 2016. N=563 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.1.

"If the Democratic primary for president were being held today, and the candidates were [see below], for whom would you vote?"

		2/10-15/16	2/2-4/16	12/16-20/15	11/23-30/15	10/29 - 11/2/15
		%	%	%	%	%
	Hillary Clinton	44	44	61	60	53
	Bernie Sanders	42	42	30	30	35
	Someone else (vol.)	-	1	-	1	-
	Wouldn't vote (vol.)	2	2	1	1	2
	Unsure/No answer	11	11	6	6	9
	Martin O'Malley	n/a	n/a	2	2	-
	Larry Lessig	n/a	n/a	n/a	n/a	1

		9/17-21/15	8/20-25/15	7/23-28/15	5/19-26/15	4/16-21/15
		%	%	%	%	%
	Hillary Clinton	43	45	55	57	60
	Bernie Sanders	25	22	17	15	8
	Joe Biden	18	18	13	9	10
	Lincoln Chafee	-	-	-	1	-
	Larry Lessig	-	n/a	n/a	n/a	n/a
	Martin O'Malley	-	1	1	1	3
	Jim Webb	-	1	1	1	1
	Someone else (vol.)	2	-	1	1	-
	Wouldn't vote (vol.)	2	2	1	2	3
	Unsure/No answer	10	11	11	14	14

ABC News/Washington Post Poll. Jan. 21-24, 2016. N=406 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.5.

"If the 2016 Democratic presidential primary or caucus in your state were being held today and the candidates were Hillary Clinton, Bernie Sanders and Martin O'Malley, for whom would you vote?" If unsure: "Which candidate would you lean toward?" Options rotated 11/15: "I'm going to read a list of possible candidates for the Democratic nomination for president in 2016. If the 2016 Democratic presidential primary or caucus in your state were being held today, for whom would you vote? [See below.]" If unsure: "Which candidate would you lean toward?"

		1/21-24/16	12/10-13/15	11/16-19/15
		%	%	%
	Hillary Clinton	55	59	60
	Bernie Sanders	36	28	34
	Martin O'Malley	4	5	3
	Other (vol.)	1	1	1
	None of these (vol.)	2	2	1
	Wouldn't vote (vol.)	1	2	0
	Unsure	2	4	1

Public Religion Research Institute. Jan. 20-24, 2016. N=253 registered Democrats nationwide.

"Which of the following Democratic candidates would you most like to see as the Democratic Party's 2016 nominee for president: [see below]?" Options rotated

		1/20-24/16	12/2-6/15
		%	%
	Hillary Clinton	53	58
	Bernie Sanders	33	24
	Martin O'Malley	1	3
	Other (vol.)	3	1
	Unsure/Refused	11	15

Bloomberg Politics Poll conducted by Selzer & Company. Nov. 15-17, 2015. N=385 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"Which one of the following Democrats would be your first choice for president: [see below]?" Options rotated

		%
	Hillary Clinton	55
	Bernie Sanders	30
	Martin O'Malley	3
	Uncommitted (vol.)	4
	Unsure	8

ABC News/Washington Post Poll. Oct. 15-18, 2015. N=352 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 6.

"I'm going to read a list of possible candidates for the Democratic nomination for president in 2016. If the 2016 Democratic presidential primary or caucus in your state were being held today, for whom would you vote? [See below.]" If unsure: "Which candidate would you lean toward?"

		10/15-18/15	9/7-10/15	7/16-19/15	5/28-31/15
		%	%	%	%
	Hillary Clinton	54	42	63	62
	Bernie Sanders	23	24	14	10
	Joe Biden	16	21	12	14
	Martin O'Malley	1	2	1	3
	Jim Webb	1	1	2	1
	Lincoln Chafee	-	1	-	1
	Other (vol.)	1	1	2	2
	None of these (vol.)	2	5	3	4
	Would not vote (vol.)	1	1	1	1
	Unsure	2	3	2	1

	Without Biden (Biden supporters allocated based on 2nd choice):

		10/15-18/15	9/7-10/15	7/16-19/15
		%	%	%
	Hillary Clinton	64	56	68
	Bernie Sanders	25	28	16
	Martin O'Malley	2	3	2
	Jim Webb	2	2	5
	Lincoln Chafee	-	1	1
	Other (vol.)	1	1	2
	None of these (vol.)	3	5	3
	Would not vote (vol.)	1	1	1
	Unsure	2	4	3

Monmouth University Poll. Oct. 15-18, 2015. N=340 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.3.

"I know the 2016 election is far away, but who would you support for the Democratic nomination for president if the candidates were [see below]?" Options rotated

		%
	Hillary Clinton	48
	Bernie Sanders	21
	Joe Biden	17
	Larry Lessig	1
	Jim Webb	1
	Lincoln Chafee	-
	Martin O'Malley	-
	No one (vol.)	3
	Unsure	9

"I know the 2016 election is far away, but who would you support for the Democratic nomination for president if the candidates were [see below]?" If Biden: "If Biden decided not to run, would you support [see below]?" Combined responses.

		%
	Hillary Clinton	57
	Bernie Sanders	24
	Lincoln Chafee	1
	Larry Lessig	1
	Martin O'Malley	1
	Jim Webb	1
	No one (vol.)	4
	Unsure	12

NBC News/Wall Street Journal Poll conducted by Hart Research Associates (D) and Public Opinion Strategies (R). Oct. 15-18, 2015. N=400 Democratic primary voters nationwide. Margin of error ą 4.9.

"And, thinking about people who might seek the Democratic nomination for president in 2016, if the next Democratic primary for president were being held today, which one of the following candidates would you favor: [see below]?" If unsure: "Well, which way do you lean?"

		10/15-18/15	9/20-24/15
		%	%
	Hillary Clinton	49	42
	Bernie Sanders	29	35
	Joe Biden	15	17
	Jim Webb	2	1
	Martin O'Malley	1	-
	Lincoln Chafee	-	-
	None (vol.)	2	1
	Unsure	2	4

"And, thinking about people who might seek the Democratic nomination for president in 2016, if the next Democratic primary for president were being held today, which one of the following candidates would you favor: [see below]?" If unsure: "Well, which way do you lean?" Asked of Biden supporters: "And, if Joe Biden decides not to seek the Democratic nomination for president in 2016, which candidate would you favor: [see below]?" Combined responses, excluding Biden.

		10/15-18/15	9/20-24/15
		%	%
	Hillary Clinton	58	53
	Bernie Sanders	33	38
	Jim Webb	2	1
	Martin O'Malley	1	1
	Lincoln Chafee	-	-
	Other (vol.)	-	1
	None (vol.)	3	2
	Unsure	3	4

CNN/ORC Poll. Oct. 14-17, 2015. N=425 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. [See below.]." Options rotated

		10/14-17/15
		%
	Hillary Clinton	45
	Bernie Sanders	29
	Joe Biden	18
	Jim Webb	1
	Lincoln Chafee	-
	Larry Lessig	-
	Martin O'Malley	-
	Someone else	2
	None/No one (vol.)	3
	Unsure	2

		9/17-19/15	9/4-8/15	8/13-16/15	7/22-25/15	6/26-28/15
		%	%	%	%	%
	Hillary Clinton	42	37	47	56	58
	Bernie Sanders	24	27	29	19	15
	Joe Biden	22	20	14	15	17
	Martin O'Malley	1	3	2	-	1
	Lincoln Chafee	-	-	-	-	-
	Jim Webb	-	2	1	1	1
	Someone else	2	7	4	4	2
	None/No one (vol.)	4	4	3	3	4
	Unsure	2	1	-	1	1

	Without Biden (Biden supporters allocated based on 2nd choice):

		10/14-17/15
		%
	Hillary Clinton	56
	Bernie Sanders	33
	Jim Webb	2
	Martin O'Malley	1
	Lincoln Chafee	-
	Larry Lessig	-
	Someone else	2
	None/No one (vol.)	3
	Unsure	2

CBS News Poll. Oct. 4-8, 2015. N=343 Democratic primary voters nationwide. Margin of error ą 6.

"Which one of these potential candidates would you like to see the Democratic Party nominate for president in 2016: [see below]?"

		10/4-8/15	9/9-13/15	7/29 - 8/2/15
		%	%	%
	Hillary Clinton	46	47	58
	Bernie Sanders	27	27	17
	Joe Biden	16	15	11
	Jim Webb	2	1	2
	Martin O'Malley	-	-	1
	Lincoln Chafee	-	1	1
	Lawrence Lessig	-	n/a	n/a
	Someone else (vol.)	1	1	-
	None of them (vol.)	4	2	4
	Unsure/No answer	5	7	7

Fairleigh Dickinson University's PublicMind. Oct. 1-5, 2015. N=339 registered voters nationwide who are Democrats or lean to the Democratic Party. Margin of error ą 5.3.

"I'm going to read you a list of declared and potential candidates for the Democratic nomination for president. If the election were held today, who would you vote for: [see below]?"

		%
	Hillary Clinton	45
	Bernie Sanders	23
	Joe Biden	17
	Martin O'Malley	1
	Jim Webb	1
	Lincoln Chafee	-
	Laurence Lessig	-
	Other (vol.)	1
	Wouldn't vote (vol.)	3
	Unsure/Refused	7

Pew Research Center. Sept. 22-27, 2015. N=387 potential Democratic primary voters nationwide. Margin of error ą 5.7.

"Thinking about the 2016 presidential election, who would be your first choice for the Democratic nomination for president?" Open-ended. One response accepted.

		%
	Hillary Clinton	45
	Bernie Sanders	24
	Joe Biden	8
	Jim Webb	-
	Martin O'Malley	-
	Lincoln Chafee	-
	Other (vol.)	1
	None (vol.)	5
	Unsure	15
	Refused	1

Bloomberg Politics Poll conducted by Selzer & Company. Sept. 18-21, 2015. N=375 Democrats and Democratic-leaners nationwide. Margin of error ą 5.1.

"Which one of the following Democrats would be your first choice for president: [see below]?" Open-ended

		%
	Hillary Clinton	33
	Joe Biden	25
	Bernie Sanders	24
	Jim Webb	2
	Martin O'Malley	1
	Lincoln Chafee	-
	Uncommitted (vol.)	8
	Unsure	7

Monmouth University Poll. Aug. 31-Sept. 2, 2015. N=339 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.3.

"I know the 2016 election is far away, but who would you support for the Democratic nomination for president if the candidates were [see below]?" Options rotated

		8/31 - 9/2/15	7/30 - 8/2/15	7/9-12/15	6/11-14/15	3/30 - 4/2/15
		%	%	%	%	%
	Hillary Clinton	42	52	51	57	60
	Joe Biden	22	12	13	12	16
	Bernie Sanders	20	16	17	12	7
	Martin O'Malley	1	2	1	1	2
	Jim Webb	1	2	1	2	1
	Lincoln Chafee	0	0	0	0	n/a
	Other (vol.)	0	2	0	0	0
	No one (vol.)	4	3	2	2	2
	Unsure	10	11	15	14	12

Gallup Poll. Aug. 5-9, 2015. N=419 Democrats and independents who lean to the Democratic Party nationwide. Margin of error ą 6.

"Suppose Joe Biden decides to run for president in the Democratic primary in 2016. Please tell me whether you will definitely support him, whether you might consider supporting him, or whether you will definitely not support him."

		Definitely support	Might consider supporting	Definitely not support	Unsure
		%	%	%	%
	8/5-9/15	19	61	19	1

"Suppose Elizabeth Warren decides to run for president in the Democratic primary in 2016. Please tell me whether you will definitely support her, whether you might consider supporting her, or whether you will definitely not support her."

		Definitely support	Might consider supporting	Definitely not support	Unsure
		%	%	%	%
	8/5-9/15	15	56	24	6

NBC News/Wall Street Journal Poll conducted by Hart Research Associates (D) and Public Opinion Strategies (R). July 26-30, 2015. N=253 Democratic primary voters nationwide. Margin of error ą 6.2.

"And, thinking about people who might seek the Democratic nomination for president in 2016, if the next Democratic primary for president were being held today, which one of the following candidates would you favor: [see below]?" If unsure: "Well, which way do you lean?"

		7/26-30/15	6/14-18/15
		%	%
	Hillary Clinton	59	75
	Bernie Sanders	25	15
	Jim Webb	3	4
	Martin O'Malley	3	2
	Lincoln Chafee	1	-
	Other (vol.)	1	1
	None (vol.)	4	2
	Unsure	4	1

CNN/ORC Poll. May 29-31, 2015. N=433 Democrats and independents who lean Democratic nationwide. Margin of error ą 4.5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Joe Biden, Hillary Clinton, Martin O'Malley, Bernie Sanders, Jim Webb, or Lincoln Chafee." Options rotated

		5/29-31/15	4/16-19/15
		%	%
	Hillary Clinton	60	69
	Joe Biden	14	11
	Bernie Sanders	10	5
	Jim Webb	2	3
	Martin O'Malley	1	1
	Lincoln Chafee	-	1
	Someone else	7	5
	None/No one (vol.)	5	3
	Unsure	1	2

Fox News Poll conducted by Anderson Robbins Research (D) and Shaw & Company Research (R). April 19-21, 2015. N=388 likely Democratic primary voters nationwide.

"I'm going to read a list of potential candidates for the 2016 Democratic nomination. Please tell me which one you would like to see as the Democratic presidential nominee. [See below.]"

		4/19-21/15	3/29-31/15
		%	%
	Hillary Clinton	62	61
	Elizabeth Warren	12	11
	Joe Biden	9	12
	Bernie Sanders	4	3
	Andrew Cuomo	3	3
	Martin O'Malley	1	2
	Lincoln Chafee	-	n/a
	Jim Webb	-	1
	Other (vol.)	-	1
	None of the above (vol.)	4	3
	Unsure	5	3

	Without Clinton (Clinton supporters allocated based on 2nd choice):

		4/19-21/15	3/29-31/15
		%	%
	Joe Biden	36	42
	Elizabeth Warren	24	22
	Andrew Cuomo	7	9
	Bernie Sanders	4	3
	Martin O'Malley	4	4
	Lincoln Chafee	1	n/a
	Jim Webb	1	3
	Other (vol.)	-	1
	None of the above (vol.)	13	8
	Unsure	11	8

Quinnipiac University. April 16-21, 2015. N=569 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.1.

"If the Democratic primary for president were being held today, and the candidates were Joe Biden, Lincoln Chafee, Hillary Clinton, Martin O'Malley, Bernie Sanders, and Jim Webb, for whom would you vote?"

		%
	Hillary Clinton	60
	Joe Biden	10
	Bernie Sanders	8
	Martin O'Malley	3
	Jim Webb	1
	Lincoln Chafee	-
	Wouldn't vote (vol.)	3
	Unsure/No answer	14

	Without Clinton (Clinton supporters allocated based on 2nd choice):

		%
	Joe Biden	40
	Bernie Sanders	11
	Martin O'Malley	8
	Jim Webb	4
	Lincoln Chafee	1
	Someone else (vol.)	1
	Wouldn't vote (vol.)	5
	Unsure/No answer	30

Monmouth University Poll. March 30-April 2, 2015. N=356 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.2.

"If Hillary Clinton did not run, who would you support for the Democratic nomination for president if the candidates were [see below]?" Options rotated

		%
	Joe Biden	34
	Elizabeth Warren	18
	Bernie Sanders	8
	Andrew Cuomo	4
	Martin O'Malley	4
	Cory Booker	3
	Deval Patrick	3
	Jim Webb	3
	Kirsten Gillibrand	2
	Joe Manchin	1
	Terry McAuliffe	1
	Brian Schweitzer	0
	No one (vol.)	1
	Unsure	18

ABC News/Washington Post Poll. March 26-29, 2015. N=1,003 adults nationwide. Results below are among registered voters who are Democrats or lean Democratic. Margin of error ą 6.

"I'm going to read a list of possible candidates for the Democratic nomination for president in 2016. After you hear the list, please tell me, if the 2016 Democratic presidential primary or caucus in your state were being held today, for whom would you vote? [See below.]" If unsure: "Which candidate would you lean toward?"

		3/26-29/15	12/11-14/14	10/9-12/14	5/29 - 6/1/14
		%	%	%	%
	Hillary Clinton	66	61	64	69
	Joe Biden	12	14	13	12
	Elizabeth Warren	12	13	11	7
	Bernie Sanders	5	4	1	2
	Jim Webb	1	3	2	1
	Martin O'Malley	-	-	1	2
	None of these (vol.)	2	1	3	2
	Would not vote (vol.)	1	1	0	0
	Unsure	2	2	5	2
	Andrew Cuomo	n/a	n/a	n/a	2
	Brian Schweitzer	n/a	n/a	n/a	1

CNN/ORC Poll. March 13-15, 2015. N=466 Democrats and independents who lean Democratic nationwide. Margin of error ą 4.5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Joe Biden, Hillary Clinton, Martin O'Malley, Bernie Sanders, Elizabeth Warren or Jim Webb." Options rotated

		3/13-15/15	2/12-15/15	12/18-21/14	11/21-23/14
		%	%	%	%
	Hillary Clinton	62	61	66	65
	Joe Biden	15	14	8	9
	Elizabeth Warren	10	10	9	10
	Bernie Sanders	3	3	3	5
	Martin O'Malley	1	1	1	-
	Jim Webb	1	2	1	1
	Someone else	6	6	6	4
	None/No one (vol.)	2	2	2	3
	Unsure	1	1	2	1
	Andrew Cuomo	n/a	n/a	1	1
	Deval Patrick	n/a	n/a	-	1

NBC News/Wall Street Journal Poll conducted by Hart Research Associates (D) and Public Opinion Strategies (R). March 1-5, 2015. N=262 Democratic presidential primary voters nationwide. Margin of error ą 6.

"Next, I'm going to mention a number of people who might seek the Democratic nomination for president in 2016. For each one, please tell me, yes or no, whether you could see yourself supporting that person for the Democratic nomination for president in 2016. If you don't know the name, please just say so. ..."

		Yes, could support	No, could not support	Don't know the name	Unsure
		%	%	%	%

	"Hillary Clinton"
	3/1-5/15	86	13	-	1

	"Joe Biden"
	3/1-5/15	54	40	3	2

	"Elizabeth Warren"
	3/1-5/15	51	17	29	3

	"Bernie Sanders"
	3/1-5/15	21	21	54	4

	"Jim Webb"
	3/1-5/15	15	24	57	4

	"Martin O'Malley"
	3/1-5/15	11	20	67	2

McClatchy-Marist Poll. March 1-4, 2015. N=462 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.6.

Democratic Presidential Preference, including those who are leaning toward a candidate:

		3/1-4/15	12/3-9/14	9/24-29/14
		%	%	%
	Hillary Clinton	60	62	64
	Joe Biden	13	11	15
	Elizabeth Warren	12	9	8
	Bernie Sanders	5	4	4
	Martin O'Malley	1	1	2
	Jim Webb	1	1	1
	Unsure	9	11	6

Quinnipiac University. Feb. 26-March 2, 2015. N=493 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.4.

"If the Democratic primary for president were being held today, and the candidates were Joe Biden, Hillary Clinton, Martin O'Malley, Bernie Sanders, Elizabeth Warren, and Jim Webb, for whom would you vote?"

		2/26 - 3/2/15	11/18-23/14
		%	%
	Hillary Clinton	56	57
	Elizabeth Warren	14	13
	Joe Biden	10	9
	Bernie Sanders	4	4
	Jim Webb	1	1
	Martin O'Malley	-	1
	Someone else (vol.)	1	1
	Wouldn't vote (vol.)	1	1
	Unsure/No answer	14	14

	Without Clinton (Clinton supporters allocated based on 2nd choice):

		2/26 - 3/2/15	11/18-23/14
		%	%
	Joe Biden	35	34
	Elizabeth Warren	25	25
	Bernie Sanders	7	6
	Jim Webb	3	2
	Martin O'Malley	1	2
	Someone else (vol.)	1	2
	Wouldn't vote (vol.)	2	1
	Unsure/No answer	25	28

Fox News Poll conducted by Anderson Robbins Research (D) and Shaw & Company Research (R). Jan. 25-27, 2015. N=390 Democratic registered voters nationwide. Margin of error ą 5.

"I'm going to read a list of potential candidates for the 2016 Democratic nomination. Please tell me which one you would like to see as the Democratic presidential nominee. [See below.]"

		1/25-27/15	12/7-9/14	7/20-22/14	4/13-15/14	12/14-16/13
		%	%	%	%	%
	Hillary Clinton	55	62	64	69	68
	Joe Biden	17	10	12	14	12
	Elizabeth Warren	12	12	9	6	7
	Andrew Cuomo	4	2	5	2	4
	Bernie Sanders	3	3	n/a	n/a	n/a
	Martin O'Malley	2	1	1	1	1
	Jim Webb	1	1	n/a	n/a	n/a
	None of the above (vol.)	2	5	4	4	2
	Unsure	3	5	4	3	6
	Deval Patrick	n/a	n/a	n/a	n/a	1

	Without Clinton (Clinton supporters allocated based on 2nd choice):

		%
	Joe Biden	37
	Elizabeth Warren	21
	Andrew Cuomo	14
	Bernie Sanders	5
	Martin O'Malley	4
	Jim Webb	1
	None of the above (vol.)	10
	Unsure	7

Monmouth University Poll. Dec. 10-14, 2014. N=386 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 5.

"I know the 2016 election is far away, but who would you like to see as the Democratic nominee for president?" Open-ended

		%
	Hillary Clinton	48
	Elizabeth Warren	6
	Joe Biden	2
	Bernie Sanders	2
	Andrew Cuomo	1
	Other	1
	No one	7
	Unsure	32

CNN/ORC Poll. Nov. 21-23, 2014. N=457 Democrats and independents who lean Democratic nationwide. Margin of error ą 4.5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Joe Biden, Hillary Clinton, Andrew Cuomo, Martin O'Malley, Deval Patrick, Bernie Sanders, Elizabeth Warren or Jim Webb." Options rotated

	Without Clinton (Clinton supporters allocated based on 2nd choice):

		%
	Joe Biden	41
	Elizabeth Warren	20
	Andrew Cuomo	7
	Bernie Sanders	7
	Martin O'Malley	4
	Jim Webb	3
	Deval Patrick	2
	Someone else	5
	None/No one (vol.)	8
	Unsure/No answer	4

CNN/ORC Poll. July 18-20, 2014. N=449 Democrats and independents who lean Democratic nationwide. Margin of error ą 4.5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Vice President Joe Biden, former Secretary of State Hillary Clinton, New York Governor Andrew Cuomo, Maryland Governor Martin O'Malley, or Massachusetts Senator Elizabeth Warren." Options rotated

		7/18-20/14	11/18-20/13	9/6-8/13
		%	%	%
	Hillary Clinton	67	63	65
	Elizabeth Warren	10	7	7
	Joe Biden	8	12	10
	Andrew Cuomo	4	5	6
	Martin O'Malley	2	2	2
	Someone else (vol.)	6	6	4
	None/No one (vol.)	2	3	5
	Unsure	1	3	2

Quinnipiac University. June 24-30, 2014. N=610 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.

"If the Democratic primary for president were being held today, and the candidates were [see below], for whom would you vote?"

		6/24-30/14	1/15-19/14	12/3-9/13	9/23-29/13	4/25-29/13
		%	%	%	%	%
	Hillary Clinton	58	65	66	61	65
	Elizabeth Warren	11	7	7	7	n/a
	Joe Biden	9	8	8	11	13
	Andrew Cuomo	4	3	3	2	4
	Martin O'Malley	1	1	-	-	1
	Brian Schweitzer	1	1	1	n/a	n/a
	Someone else (vol.)	1	1	1	-	1
	Wouldn't vote (vol.)	1	-	1	2	-
	Unsure/No answer	15	13	12	15	14
	Howard Dean	n/a	2	1	n/a	n/a
	Mark Warner	n/a	n/a	n/a	1	1
	Deval Patrick	n/a	n/a	n/a	n/a	1

CNN/ORC Poll. March 7-9, 2014. N=372 Democrats and independents who lean Democratic nationwide. Margin of error ą 5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Vice President Joe Biden, former Secretary of State Hillary Clinton, New York Governor Andrew Cuomo, Maryland Governor Martin O'Malley, or former Montana Governor Brian Schweitzer." Options rotated

		%
	Hillary Clinton	64
	Joe Biden	13
	Andrew Cuomo	4
	Martin O'Malley	4
	Brian Schweitzer	3
	Someone else (vol.)	6
	None/No one (vol.)	5
	Unsure	1

ABC News/Washington Post Poll. Jan. 20-23, 2014. N=1,003 adults nationwide. Results below are among registered voters who are Democrats or lean Democratic.

"If the 2016 Democratic presidential primary or caucus in your state was being held today, and the candidates were [see below], for whom would you vote?" If unsure: "Which candidate would you lean toward?" Options rotated

		%
	Hillary Clinton	73
	Joe Biden	11
	Elizabeth Warren	9
	None of these (vol.)	3
	Unsure	4

McClatchy-Marist Poll. Dec. 3-5, 2013. N=466 registered voters nationwide who are Democrats or lean Democratic. Margin of error ą 4.5.

"If the 2016 Democratic presidential primary or caucus in your state were held today, whom would you support if the candidates are [see below]?"

		12/3-5/13	7/15-18/13
		%	%
	Hillary Clinton	65	63
	Joe Biden	12	13
	Elizabeth Warren	9	n/a
	Andrew Cuomo	3	6
	Martin O'Malley	1	1
	Unsure	9	18

"How about if the candidates are [see below]?"

		%
	Joe Biden	45
	Elizabeth Warren	25
	Andrew Cuomo	11
	Martin O'Malley	4
	Unsure	15

CNN/ORC Poll. Nov. 18-20, 2013. N=374 Democrats and independents who lean Democratic nationwide. Margin of error ą 5.

"I'm going to read a list of people who may be running in the Democratic primaries for president in 2016. After I read all the names, please tell me which of those candidates you would be most likely to support for the Democratic nomination for president in 2016, or if you would support someone else. Vice President Joe Biden, former secretary of state Hillary Clinton, New York Governor Andrew Cuomo, Maryland Governor Martin O'Malley or Massachusetts Senator Elizabeth Warren." Options rotated

		%
	Hillary Clinton	63
	Joe Biden	12
	Elizabeth Warren	7
	Andrew Cuomo	5
	Martin O'Malley	2
	Someone else (vol.)	6
	None/No one (vol.)	3
	Unsure	3

	"... And who would be your second choice?"

		%
	Joe Biden	37
	Hillary Clinton	16
	Elizabeth Warren	14
	Andrew Cuomo	14
	Martin O'Malley	8
	Someone else (vol.)	3
	None/No one (vol.)	7
	Unsure	1

	First-choice, excluding Clinton (Clinton supporters reallocated based on their second choice):

		%
	Joe Biden	43
	Elizabeth Warren	17
	Andrew Cuomo	15
	Martin O'Malley	6
	Someone else (vol.)	8
	None/No one (vol.)	7
	Unsure	4

NBC News Poll conducted by Princeton Survey Research Associates International. Nov. 7-10, 2013. N=428 Democrats and independents who lean Democratic nationwide. Margin of error ą 5.5.

"If the 2016 Democratic presidential primary were held today and Hillary Clinton were running, do you think you would vote for Hillary Clinton or for another Democratic candidate?"

		Hillary Clinton	Another candidate	Wouldn't vote (vol.)	Unsure	Refused
		%	%	%	%	%
	11/7-10/13	66	14	2	18	1

Fairleigh Dickinson University's PublicMind. April 22-28, 2013. N=373 Democrats and voters who lean Democratic nationwide. Margin of error ą 5.1.

"I know it's early, but if the election for president were held today, which of the following people would you like to see as the Democratic candidate: Hillary Clinton, Andrew Cuomo, Joe Biden, or someone else?" Options rotated.

		%
	Hillary Clinton	63
	Joe Biden	12
	Andrew Cuomo	3
	Other	12
	Unsure	10
	Refused	1

CNN/ORC Poll. Dec. 17-18, 2012. N=290 Democrats and Democratic-leaning independents nationwide. Margin of error ą 6.

"I'm going to read you the names of a few people who might run for the Democratic presidential nomination in 2016. For each one, please tell me whether you would be very likely, somewhat likely, not very likely, or not likely at all to support them if they decide to run for the Democratic nomination four years from now. . . ."

		Very likely	Somewhat likely	Not very likely	Not likely at all	Unsure
		%	%	%	%	%

	"Secretary of State Hillary Clinton"
	12/17-18/12	65	20	8	6	-

	"Vice President Joe Biden"
	12/17-18/12	26	40	21	13	1

	"Massachusetts Senator Elizabeth Warren"
	12/17-18/12	16	36	26	14	8

	"New York Governor Andrew Cuomo"
	12/17-18/12	11	45	25	16	3

	"Montana Governor Brian Schweitzer"
	12/17-18/12	10	27	32	18	13

	"Massachusetts Governor Deval Patrick"
	12/17-18/12	8	33	29	18	11

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