UPDATED Mar. 13, 2023, at 3:53 PM

FiveThirtyEight’s Pollster Ratings

Based on the historical accuracy and methodology of each polling organization’s polls.

What are pollster ratings?

Pollsters with a relatively small number of polls receive a provisional rating rather than a precise letter grade.

Pollsteri	538 Gradei	Predictive +/-i	Polls Analyzedi	Mean-Reverted Biasi
SurveyUSA	A+	-0.9	856	D+0.0
Rasmussen Reports	B	+0.1	772	R+1.4
Zogby Analytics	B-	+0.5	495	R+0.6
YouGov	B+	-0.2	482	D+0.8
Public Policy Polling	A-	-0.4	462	D+0.9
Mason-Dixon Polling & Strategy	A-	-0.4	446	R+0.5
American Research Group	C+	+0.8	279	D+0.1
SurveyMonkey	C	+1.0	268	D+4.7
Emerson College	A-	-0.5	256	D+0.3
Quinnipiac University	A-	-0.4	223	D+0.6
Marist College	A	-0.7	200	D+0.3
Harris Insights & Analytics	B	0.0	182	R+1.0
InsiderAdvantage	B	+0.3	182	D+0.2
Gravis Marketing/Kaplan Strategies	B	+0.1	155	D+1.4
University of New Hampshire Survey Center	B-	+0.4	129	D+2.0
Monmouth University	A	-0.6	122	D+2.1
Trafalgar Group	B	+0.1	113	R+2.4
Ipsos	B-	+0.4	111	D+1.8
Change Research	B-	+0.5	109	D+2.8
Big Village	B-	+0.3	106	D+0.2
Data for Progress	B	+0.1	106	D+1.5
Suffolk University	A-	-0.4	96	D+0.8
The New York Times/Siena College	A+	-1.2	95	D+1.0
Swayable	C	+1.1	89	D+3.9
Gallup	B+	-0.1	84	R+0.6
ABC News/The Washington Post	A	-0.7	82	D+0.8
Public Opinion Strategies	B+	-0.3	80	R+1.3
Mitchell Research & Communications	C-	+1.3	76	D+0.9
Morning Consult	B-	+0.4	72	D+3.1
CBS News/The New York Times	A-	-0.4	66	D+0.3
Siena College	A	-0.8	62	R+0.2
GQR	B+	-0.1	60	D+2.2
Research Co.	B-	+0.3	58	D+0.7
Beacon Research/Shaw & Co. Research	A	-0.7	56	D+1.4
EPIC-MRA	B+	0.0	56	D+0.1
We Ask America	B-	+0.4	56	R+0.8
Remington Research Group	B	+0.2	53	D+1.2
Selzer & Co.	A+	-1.2	53	D+0.2
Susquehanna Polling & Research Inc.	B+	-0.2	50	D+0.4
RT Strategies	B/C	+0.1	45	D+0.9
Research & Polling Inc.	A+	-1.0	44	R+0.6
Civiqs	B	+0.1	42	D+3.0
Landmark Communications	A	-0.6	41	D+0.9
Dan Jones & Associates	B	+0.3	40	D+0.8
Cygnal	A	-0.7	39	D+1.6
University of Cincinnati (Ohio Poll)	A/B	0.0	39	R+1.2
Los Angeles Times	A/B	-0.4	37	R+0.2
Princeton Survey Research Associates International	A/B	-0.1	35	D+0.4
RKM Research and Communications Inc.	A/B	-0.3	35	R+0.1
Muhlenberg College	A-	-0.3	34	R+0.2
Opinion Dynamics	A/B	-0.2	34	R+0.3
ccAdvertising	B/C	+0.8	33	R+2.4
Garin-Hart-Yang Research Group	B+	-0.1	33	D+1.9
Hart Research Associates/Public Opinion Strategies	B+	-0.1	33	D+0.8
Lake Research Partners/The Tarrance Group	A/B	0.0	33	R+0.7
SSRS	C+	+0.8	32	D+2.5
Angus Reid Global	A/B	-0.2	31	R+1.1
Tarrance Group	B+	-0.2	31	R+0.9
University of Massachusetts Lowell Center for Public Opinion	A-	-0.5	30	D+0.7
Grove Insight	A/B	-0.4	29	D+0.5
TIPP Insights	A-	-0.6	29	R+0.8
McLaughlin & Associates	C/D	+1.4	28	R+1.6
Mellman Group	B/C	+0.2	28	D+1.8
Market Research Insight	B/C	+0.9	27	R+0.5
St. Pete Polls	B+	-0.1	27	D+0.0
Global Strategy Group	B/C	+0.7	26	D+1.8
SoonerPoll.com	C	+1.0	26	D+2.9
Field Research Corp. (Field Poll)	A/B	-0.4	25	R+0.6
Franklin & Marshall College	B/C	+0.2	25	D+0.6
Lucid	B	+0.3	25	D+1.8
Market Shares Corp.	B/C	+0.3	25	R+1.0
MRG Research	B/C	+1.1	25	R+3.0
Pew Research Center	B/C	+0.1	25	D+0.7
RMG Research	B-	+0.4	25	D+3.3
AtlasIntel	A	-0.8	24	D+0.3
Google Consumer Surveys	B/C	+0.5	24	R+0.1
Targoz Market Research	C	+0.9	24	D+1.2
Columbus Dispatch	B/C	+0.3	22	D+0.9
KRC Research	A/B	-0.1	22	D+0.1
Digital Research	B/C	+1.0	21	D+0.1
Elway Research	A/B	-0.3	21	D+0.7
Fairleigh Dickinson University	A/B	-0.2	21	R+0.1
GfK Group	A/B	0.0	21	D+0.2
Impact Research	B/C	+0.4	21	D+1.3
Ciruli Associates	B/C	+0.2	20	R+0.6
co/efficient	B+	0.0	20	R+2.3
MassINC Polling Group	A/B	-0.6	20	R+0.7
Blum & Weprin Associates	B/C	0.0	19	R+0.6
New England College Polling Center	A/B	0.0	19	R+1.1
PSB Research	B/C	+0.6	19	D+2.1
Roanoke College Institute for Policy and Opinion Research	B/C	+0.9	19	D+0.6
Vox Populi Polling	A/B	-0.1	19	D+0.4
Fleming & Associates	A/B	-0.1	18	R+0.5
Hendrix College	B/C	+0.8	18	D+2.0
Loras College Public Opinion Survey Center	B/C	+0.9	18	D+1.4
Magellan Strategies	B/C	0.0	18	R+0.4
Moore Information Group	B/C	+0.7	18	R+1.7
Public Policy Institute of California	A/B	-0.5	18	R+1.1
WPA Intelligence	B/C	+0.4	18	R+0.6
Franklin Pierce University Marlin Fitzwater Center for Communication	B/C	+0.6	17	D+0.7
Pan Atlantic Research	B/C	+0.3	17	D+0.7
Rutgers University Eagleton Center for Public Interest Polling	B/C	+0.8	17	D+0.4
St. Cloud State University	B/C	+1.1	17	D+1.7
Øptimus Analytics	B/C	0.0	17	R+0.5
Clout Research	B/C	+0.7	16	R+1.7
Data Orbital	A/B	-0.4	16	D+0.2
Wick	B/C	+0.1	16	R+1.3
Alaska Survey Research	A/B	-0.6	15	D+1.8
EMC Research	B/C	+0.8	15	D+1.2
Financial Dynamics	B/C	+0.4	15	R+0.5
Marquette University Law School	A/B	-0.9	15	D+0.2
National Research	A/B	-0.3	15	R+0.4
RRH Elections	A/B	-0.3	15	R+0.3
Ward Research	B/C	+0.2	15	R+0.4
Brown University A. Alfred Taubman Center for American Politics and Policy	C/D	+1.7	14	R+0.2
Christopher Newport University Wason Center for Civic Leadership	A/B	-0.4	14	D+1.0
DHM Research	B/C	+0.6	14	R+0.1
East Carolina University Center for Survey Research	B/C	+0.1	14	D+1.3
Harper Polling	B/C	0.0	14	D+0.4
Maine People's Resource Center	B/C	+0.4	14	D+0.1
Minneapolis Star Tribune	B/C	+0.5	14	D+0.7
Opinion Research Associates	C/D	+1.5	14	D+1.8
SEA Polling & Strategic Design	A/B	0.0	14	D+0.5
The Tyson Group	B/C	+0.5	14	D+0.1
Abt Associates	A/B	-0.1	13	D+0.8
Capital Survey Research Center	B/C	+0.7	13	D+0.0
Clarity Campaign Labs	B/C	0.0	13	D+1.1
GBAO	B/C	+0.2	13	D+1.2
Glengariff Group	B/C	+0.2	13	D+0.6
JMC Analytics	B/C	+0.5	13	R+0.7
University of New Orleans Survey Research Center	B/C	+0.4	13	D+0.3
University of North Florida Public Opinion Research Lab	A/B	-0.6	13	D+1.5
Benenson Strategy Group	B/C	+0.4	12	D+1.2
Citizen Data	B/C	+1.0	12	D+2.6
Lake Research Partners	A/B	-0.1	12	D+0.7
Leger	B/C	+0.3	12	D+0.2
National Journal	A/B	-0.1	12	R+0.1
Normington, Petts & Associates	B/C	+0.8	12	D+0.8
OH Predictive Insights	B/C	+0.2	12	R+0.5
OnMessage Inc.	B/C	+0.5	12	R+1.5
St. Norbert College Strategic Research Institute	B/C	+0.2	12	R+0.0
Stockton University	A/B	-0.4	12	D+0.9
The Political Matrix/The Listener Group	C/D	+1.5	12	D+1.6
Victory Research	B/C	+0.1	12	D+0.1
Dixie Strategies	B/C	+0.5	11	R+1.0
Fabrizio, Lee & Associates	A/B	-0.2	11	R+0.3
FM3 Research	C/D	+1.4	11	D+2.1
Harstad Strategic Research	B/C	+0.1	11	D+0.6
KAConsulting	A/B	-0.1	11	R+1.5
Landmark Communications/Rosetta Stone Communications	A/B	-0.1	11	D+1.2
Market Research Institute Inc.	B/C	+0.3	11	D+0.1
Montana State University Billings Mountain States Poll	B/C	+0.7	11	D+1.8
Nielson Brothers Polling	C/D	+2.0	11	D+3.4
North Star Opinion Research	B/C	0.0	11	R+0.6
Richard Day Research	B/C	+0.4	11	R+0.4
The Winston Group	A/B	-0.2	11	D+1.1
University of Connecticut	A/B	-0.3	11	R+0.1
University of Massachusetts Department of Political Science	B/C	+0.4	11	R+0.1
Western New England University Polling Institute	A/B	-0.1	11	R+0.4
Big Ten	B/C	+0.6	10	D+0.7
DFM Research	B/C	+0.3	10	D+1.4
Dittman Research	A/B	-0.3	10	D+0.9
Echelon Insights	A/B	-0.2	10	R+0.2
Ed Renwick/Loyola University New Orleans	B/C	+0.8	10	D+0.8
Gonzales Research & Marketing Strategies Inc.	B/C	+0.8	10	R+0.6
Louisville Courier-Journal	B/C	+0.3	10	R+0.2
Marketing Resource Group (MRG)	B/C	+1.0	10	D+0.3
University of Arkansas Department of Political Science	A/B	0.0	10	D+1.0
University of Minnesota Hubert H. Humphrey School of Public Affairs	B/C	+1.3	10	D+0.5
University of Southern California Center for Economic and Social Research	B/C	+0.5	10	D+0.9
American Viewpoint	B/C	+0.5	9	R+0.6
Florida Atlantic University	A/B	-0.2	9	D+0.6
Hays Research Group	B/C	+0.7	9	D+0.8
Redfield & Wilton Strategies	B/C	+0.7	9	D+2.0
Saint Anselm College Survey Center	B/C	+0.2	9	R+0.7
Strategies 360	B/C	+0.2	9	D+1.3
University of South Alabama Polling Group	B/C	+0.3	9	R+0.4
University of Washington Center for Survey Research	B/C	+0.4	9	D+0.0
20/20 Insight	B/C	+0.7	8	D+0.5
Amber Integrated	B/C	+1.3	8	D+2.1
Arizona State University Morrison Institute for Public Policy	B/C	+0.8	8	D+0.5
Clemson University	B/C	0.0	8	D+0.0
Datamar Analytics	B/C	+0.8	8	R+0.2
DCCC Targeting and Analytics Department	B/C	+0.3	8	D+1.5
Drake Research & Strategy, Inc.	B/C	+0.6	8	R+0.0
Elon University	A/B	-0.2	8	D+0.4
Frederick Polls	B/C	+0.4	8	D+0.6
Greenberg Quinlan Rosner/American Viewpoint	A/B	-0.3	8	R+0.6
Marketing Workshop	B/C	+1.0	8	D+0.3
Potomac Incorporated	B/C	+0.4	8	R+0.3
Southeastern Louisiana University Social Science Research Center	B/C	+0.7	8	D+0.1
The Washington Post/George Mason University Schar School of Policy and Government	A/B	-0.6	8	D+0.2
University of Wisconsin Survey Center	B/C	+0.7	8	D+0.6
Valley Research	B/C	+0.5	8	D+0.4
Virginia Commonwealth University L. Douglas Wilder School of Government and Public Affairs	B/C	+0.6	8	D+0.1
Voter/Consumer Research	B/C	+0.5	8	R+0.1
Y2 Analytics	B/C	+0.7	8	D+1.2
Behavior Research Center (Rocky Mountain Poll)	B/C	+0.5	7	D+0.4
Constituent Dynamics	B/C	+0.7	7
Howey Politics/DePauw University	B/C	+0.7	7	D+0.1
OpinionWorks	B/C	+0.3	7	R+0.5
Patriot Polling	B/C	+0.8	7	R+1.5
Phillips Academy	B/C	+0.8	7	R+1.0
Riley Research Associates	B/C	+0.3	7	R+0.1
Southern Media & Opinion Research	B/C	+0.5	7	D+0.1
The Polling Company Inc.	B/C	+0.6	7	R+1.0
University of Texas at Tyler Center for Opinion Research	B/C	+0.8	7	D+0.3
Univision/Latino Decisions/North Star Opinion Research	B/C	+0.8	7	D+1.2
West Chester University	B/C	+0.6	7	D+0.1
Wiese Research Associates	B/C	+0.5	7	D+0.8
Yankelovich Partners Inc.	B/C	+0.3	7	R+0.0
Ascend Action	C/D	+2.4	6	D+3.7
Baydoun Consulting	B/C	+0.7	6	R+0.9
Braun Research	B/C	+0.5	6	D+1.0
Cherry Communications	B/C	+0.7	6	R+0.2
Colby College	B/C	+0.8	6	D+1.8
CVOTER	B/C	+0.2	6	R+0.2
Ethridge & Associates LLC	B/C	+0.5	6	R+0.0
Fort Hays State University Docking Institute of Public Affairs	C/D	+2.7	6	R+1.3
Hill Research Consultants	B/C	+0.8	6	R+0.2
Kimball Political Consulting	B/C	+0.7	6	R+0.9
Meredith College	B/C	+1.1	6	D+1.2
MSR Group	B/C	+0.4	6	D+0.1
OnPoint	B/C	+0.4	6	D+0.0
Point Blank Political	C/D	+1.3	6
Public Strategies Inc.	B/C	+0.7	6
RABA Research	B/C	+1.0	6	D+1.7
Saint Leo University Polling Institute	C/D	+1.3	6	D+1.6
Target Insyght	C/D	+1.3	6	R+0.6
Temple University Institute for Survey Research	A/B	-0.1	6	R+0.2
University of Georgia School of Public and International Affairs	B/C	+0.1	6	D+0.4
Becker Institute	B/C	+0.7	5	D+0.3
Carroll Strategies	B/C	+1.2	5	R+1.7
Cole Hargrave Snodgrass & Associates	B/C	+0.8	5	D+0.1
Frank N. Magid Associates Inc.	B/C	+0.6	5	D+0.4
Greg Smith & Associates	B/C	+1.0	5	D+0.8
Hellenthal & Associates	B/C	+0.8	5	D+0.3
JMC Analytics/Bold Blue Campaigns	B/C	+0.6	5	R+1.0
Keating Research	B/C	+0.4	5	D+0.1
Kiley & Company	B/C	+0.3	5	D+0.4
Meeting Street Insights	B/C	+0.4	5	D+0.6
Middle Tennessee State University	B/C	+0.2	5	D+0.5
Millersville University Center for Politics and Public Affairs	B/C	+0.9	5	R+0.5
Quest Research Group	B/C	+0.6	5	R+0.1
Scripps Howard	B/C	+0.5	5	R+0.1
Spry Strategies	B/C	+0.1	5	R+0.4
Strategic Research Associates	B/C	+0.6	5	D+0.3
The Florida Poll	B/C	+0.7	5	D+0.2
University of California Berkeley Institute of Governmental Studies	B/C	+0.3	5	D+0.2
University of Nevada, Las Vegas Lee Business School	B/C	+0.3	5	D+0.2
University of Wyoming Survey & Analysis Center	C/D	+1.4	5	D+2.5
Alabama State University	B/C	+0.4	4
AYTM	B/C	+0.6	4	D+0.6
Baldwin Wallace University Community Research Institute	B/C	+1.1	4	D+1.5
Basswood Research	B/C	+0.5	4	R+0.2
Brigham Young University Center for the Study of Elections and Democracy	C/D	+1.7	4	D+1.8
CallFire	B/C	+0.6	4	R+0.4
Center Street PAC	C/D	+1.3	4	D+1.7
Elucd	B/C	+1.1	4
Global Strategy Group/National Research (Philadelphia Inquirer)	B/C	+0.6	4	R+0.3
Hampton University Center for Public Policy	B/C	+0.9	4	R+0.7
High Point University Survey Research Center	B/C	+0.6	4	D+0.0
HighGround Inc.	B/C	+0.6	4	R+0.6
IVR Polls	B/C	+0.4	4
Jim Meader (KELOLAND-TV)	B/C	+0.6	4	D+0.2
Jorge Benítez	B/C	+0.6	4
Knowledge Networks	B/C	0.0	4	D+0.3
Long Island University Steven S. Hornstein Center for Policy, Polling, and Analysis	C/D	+1.9	4	D+2.1
Market Decisions Research	B/C	+0.5	4	R+0.1
Market Solutions Group	B/C	+0.5	4	R+0.0
Marshall Marketing	B/C	+0.5	4	R+0.2
Minnesota State University Moorhead Public Affairs Institute	B/C	+0.7	4	D+0.4
Multi-Quest International	B/C	+0.7	4	R+0.0
Northern Arizona University Social Research Laboratory	B/C	+0.5	4	R+0.2
Orion Strategies	B/C	+0.4	4	D+0.1
Patinkin Research Strategies	B/C	+0.8	4	D+0.9
Polling Company/Global Strategy Group	B/C	+0.1	4	R+0.2
Purple Strategies	B/C	+0.6	4	R+0.3
RAND (American Life Panel)	B/C	+0.5	4	D+0.2
RBI Strategies & Research	B/C	+0.3	4	D+0.3
Repass	B/C	+1.1	4	D+0.1
Richmond Times-Dispatch	B/C	+0.6	4	D+0.1
Starboard Communications	B/C	+0.2	4	D+0.3
Strategic National	B/C	+0.2	4	D+0.4
Western Kentucky University Social Science Research Center	B/C	+0.9	4	D+0.8
Wirthlin Worldwide	B/C	0.0	4	R+0.2
Zia Poll	B/C	+0.7	4	R+0.7
Aspen Media & Market Research	B/C	+0.6	3	R+0.0
Beacon Research	B/C	+0.8	3
Belden Russonello	B/C	0.0	3	D+0.0
BK Strategies	B/C	+0.4	3	D+0.4
Brandwatch Qriously	B/C	+0.9	3	D+0.8
Cardinal Point Analytics (CardinalGPS)	B/C	+0.3	3	R+0.3
CJ&N	B/C	+0.5	3	D+0.1
Clarus Research Group	B/C	+0.6	3	D+0.3
Dartmouth College Nelson A. Rockefeller Center for Public Policy and the Social Sciences	B/C	+0.6	3
David Binder Research	B/C	+0.3	3	D+0.1
Decision Forecasting	B/C	+0.7	3	R+0.0
Edgewater Research/My People Vote	B/C	+0.3	3	R+0.1
Global Strategy Group/GBAO (Navigator Research)	B/C	+0.7	3	D+0.7
Hoffman Research Group	B/C	+0.8	3	R+0.6
Illinois Wesleyan University Department of Political Science	B/C	+0.7	3	R+0.3
Indiana University-Purdue University Fort Wayne Mike Downs Center for Indiana Politics	C/D	+1.9	3
Iowa State University Center for Survey Statistics and Methodology	B/C	+0.4	3
Keating Research/OnSight Public Affairs/Melanson	B/C	+0.4	3	R+0.1
Lycoming College Polling Institute	B/C	+0.8	3	D+0.4
Manhattanville College	B/C	+0.6	3	R+0.1
McKeon & Associates	B/C	+0.4	3	D+0.2
Missouri State University Center for Social Science and Public Policy Research	B/C	+0.5	3	D+0.3
Momentum Analysis	B/C	+1.1	3	D+0.3
Neighborhood Research and Media	B/C	+0.6	3	R+0.1
Ogden & Fry	B/C	+0.3	3	R+0.0
Personal Marketing Research	B/C	+0.5	3
Praecones Analytica	B/C	+0.3	3	R+0.2
Probolsky Research	B/C	+0.6	3	R+0.6
PSI	B/C	+0.7	3	R+0.0
RMS Research	B/C	+0.8	3	D+0.3
ROI Rocket	B/C	+0.3	3
TargetSmart	B/C	+0.7	3	D+0.5
The Castleton Polling Institute	B/C	+0.5	3
Triton Polling & Research	C/D	+1.5	3	D+1.1
Tulchin Research	B/C	+0.4	3	R+0.1
University of Iowa Hawkeye Poll Cooperative	B/C	+1.0	3	R+0.3
University of Southern California Schwarzenegger Institute for State and Global Policy	B/C	+0.7	3	D+0.8
Zimmerman & Associates/Marketing Intelligence	B/C	+0.6	3	D+0.2
Abacus Associates	B/C	+0.7	2	D+0.1
APC Research	B/C	+0.5	2	D+0.1
Auburn University at Montgomery Department of Political Science and Public Administration	B/C	+0.7	2	D+0.7
Bannon Communications Research	B/C	+0.7	2	D+0.3
Baruch College Survey Research	B/C	+0.5	2
Baselice & Associates	B/C	+0.7	2	D+0.3
Bendixen & Amandi International	B/C	+0.5	2	D+0.1
Bluegrass Community and Technical College	B/C	+1.0	2	D+1.0
Blueprint Polling	B/C	+0.3	2	D+0.3
BSP Research/Shaw & Company Research	B/C	+0.3	2	R+0.1
BWD Global	B/C	+1.0	2	R+0.1
Consumer Logic	B/C	+0.8	2	D+0.3
CPEC	B/C	+1.2	2
CrossTarget	B/C	+0.7	2	R+0.3
Dane & Associates	B/C	+1.2	2	R+0.8
Data West Polling	B/C	+0.8	2	D+0.3
Douglas Fulmer & Associates	B/C	+0.4	2
Dynata	B/C	+0.6	2
East Tennessee State University Applied Social Research Laboratory	B/C	+0.9	2	D+0.8
El Nuevo Día/The Research Office	B/C	+0.4	2
Feldman Group	B/C	+0.7	2	D+0.2
Forman Center	B/C	+0.7	2	D+0.2
Forward Strategies	B/C	+0.5	2	D+0.1
GaPundit.com	B/C	+0.7	2	D+0.5
Gazette Communications	B/C	+0.7	2	D+0.2
Glascock Group	B/C	+1.1	2	D+0.2
GOP Calls	B/C	+1.2	2	R+0.9
Gordon S. Black Corp.	B/C	+0.1	2	R+0.1
GreatBlue Research	B/C	+0.6	2	R+0.0
GS Strategy Group	B/C	+0.4	2	R+0.4
IMGE Insights	B/C	+0.6	2	R+0.5
Independent Market Research	B/C	+0.7	2	D+0.1
Indiana University Public Opinion Laboratory	B/C	0.0	2	D+0.0
J.L. Partners	B/C	+0.8	2	D+0.7
Jayhawk Consulting Services	C/D	+2.5	2	D+2.6
John Zogby Strategies	B/C	+0.4	2	D+0.0
Kiaer Research	B/C	+1.0	2	D+0.9
Latino Decisions	B/C	+0.4	2	D+0.2
Lincoln Institute	B/C	+0.6	2	R+0.1
Louis Harris & Associates	B/C	0.0	2	D+0.0
MarblePort	B/C	+0.7	2	R+0.3
Massie & Associates	B/C	+0.9	2	R+0.5
Master Image	B/C	+0.4	2
Merrill Poll	B/C	+0.5	2
MFour Mobile Research	B/C	+0.5	2	R+0.1
Michigan State University Institute for Public Policy and Social Research	A/B	-0.1	2	R+0.0
MWR Strategies	B/C	+0.4	2	R+0.0
Myers Research & Strategic Services	B/C	+0.6	2	D+0.1
New Frontier Strategy	B/C	+0.7	2
Ohio University	B/C	+0.8	2	D+0.3
Open Model Project	B/C	+0.8	2	R+0.5
Opinion Consultants	B/C	+0.7	2	R+0.2
Opinium	B/C	+0.8	2	D+0.6
Pacific Market Research	B/C	+0.6	2	R+0.6
Public Opinion Strategies/Hamilton Campaigns (Texas Credit Union League)	A/B	0.0	2
Ragnar Research Partners	B/C	+0.5	2	D+0.3
Reconnect Research/Probolsky Research	B/C	+0.6	2	R+0.1
Rice University	B/C	+0.7	2	D+0.1
Saguaro Strategies	B/C	+0.8	2	D+0.3
Schapiro Group	B/C	+0.9	2
Slingshot Strategies	B/C	+0.5	2	D+0.4
SocialSphere	B/C	+0.7	2	R+0.4
Southern Opinion Research	B/C	+0.7	2	D+0.0
Stetson University Center for Public Opinion Research	B/C	+0.8	2	D+1.0
Strategy Research	B/C	+0.6	2	R+0.4
TargetPoint	B/C	+1.1	2
The Justice Collaborative Institute	B/C	+0.8	2	D+0.6
Thomas Partners Strategies	B/C	+1.3	2	R+1.2
Thomas Partners Strategies/Øptimus	B/C	+0.3	2	R+0.8
TMR Research	B/C	+0.7	2	D+0.2
Tufts University Public Opinion Lab	B/C	+0.5	2	D+0.3
University of Alabama at Birmingham	B/C	+0.8	2	R+0.3
University of Colorado Boulder American Politics Research Lab	B/C	+0.8	2	D+0.5
University of Tennessee	B/C	+0.6	2	R+0.1
University of Wisconsin-Milwaukee Institute for Survey and Policy Research	B/C	+0.6	2	R+0.0
Victory Insights	B/C	+0.8	2	D+1.0
WCIA-TV	B/C	+0.8	2	R+0.3
West Virginia Research Center	B/C	+0.7	2	D+0.1
Winthrop University Center for Public Opinion & Policy Research	B/C	+0.2	2	D+0.0
Zata3	B/C	+0.7	2	R+0.2
1892 Polling	B/C	+0.5	1	R+0.0
A&A Research	B/C	+0.7	1	R+0.1
African American Research Collaborative	B/C	+0.6	1	D+0.1
Alloy Analytics	B/C	+0.7	1	R+0.2
Analytical Group	B/C	+0.6	1	D+0.1
Arthur J. Finkelstein & Associates	B/C	+0.7	1	R+0.2
ASA Marketing Group	B/C	+0.6	1	D+0.1
Bainbridge Media Group	B/C	+0.9	1	D+0.4
BIGresearch	B/C	+0.6	1	R+0.0
Bold Decision	B/C	+0.8	1	D+0.5
brilliant corners Research & Strategies	B/C	+0.8	1	D+0.6
California State University, Bakersfield	B/C	+0.7	1	R+0.1
Canisius College	B/C	+0.6	1
Central Surveys Inc.	B/C	+0.6	1	D+0.0
Centre College	B/C	+0.6	1	D+0.1
Cometrends	B/C	+0.8	1	D+0.3
Concord Public Opinion Partners	B/C	+0.9	1
Cooper & Secrest	B/C	+0.6	1	R+0.0
Craciun Research Group	B/C	+1.0	1	D+0.7
Crantford Research	B/C	+0.6	1	D+0.1
Cromer Group	B/C	+0.6	1	R+0.1
CWS Research	B/C	+0.5	1	R+0.0
Data Targeting	B/C	+0.5	1	R+0.2
DeSales University Kamran Afshar Data Analytics Center	B/C	+1.0	1	D+0.7
Detroit Free Press	B/C	+0.7	1	D+0.1
Diamond State Consulting Group	B/C	+0.6	1	D+0.1
Diversified Research Inc	B/C	+0.6	1	R+0.1
Dynamics Marketing	B/C	+0.6	1	D+0.0
Escalent	B/C	+0.6	1	R+0.0
Fabrizio Lee & Associates/Impact Research	B/C	+0.5	1	D+0.0
Florida International University/Univision	B/C	+0.6	1	D+0.0
Garin-Hart-Yang/Global Strategy Group	B/C	+0.6	1	R+0.0
GCR & Associates	B/C	+0.9	1
Global Marketing Research Services	B/C	+0.9	1	D+0.4
Glover Park Group	B/C	+0.8	1	R+0.3
GQR Research/Public Opinion Strategies	B/C	+0.1	1	D+0.1
Great Lakes Strategies Group	B/C	+0.7	1	R+0.2
Harper Polling/Clarity Campaign Labs	B/C	+0.7	1	D+0.3
Harvard University	B/C	+0.1	1	D+0.1
Hickman Analytics	B/C	+0.8	1	D+0.4
Iona University Political Science Department	B/C	+0.7	1	D+0.1
Island Analytics & Marketing, LLC	C/D	+1.3	1
Jeffrey Stonecash	B/C	+0.8	1	R+0.2
Lauer Johnson Research	B/C	+0.8	1	D+0.2
Lauer, Lalley, Victoria	B/C	+0.6	1	R+0.0
Lester & Associates	B/C	+0.7	1
Liberty Opinion Research	B/C	+0.6	1
Market Trends Pacific	B/C	+0.6	1	D+0.1
MarketAide Services Inc.	B/C	+0.7	1	D+0.1
Marketing Research Institute	B/C	+0.7	1	R+0.1
Mason Strategies	B/C	+0.5	1	D+0.1
Mercyhurst University Center for Applied Politics	B/C	+0.6	1	R+0.0
Morningside College Col. Bud Day Center for Civic Engagement	B/C	+0.6	1
Neighbor	B/C	+0.8	1	R+0.2
Nelson Research	B/C	+0.8	1	R+0.3
New Mexico State University	B/C	+0.6	1
NewsNation	B/C	+0.5	1	D+0.1
NRECA Market Research	B/C	+0.6	1	D+0.1
Odney	B/C	+0.6	1	D+0.1
Ohio State University	B/C	+0.1	1	R+0.0
Old Dominion University	B/C	+0.7	1	D+0.1
Park Street Strategies	B/C	+0.5	1
Pasquines	B/C	+0.6	1
Penta	B/C	+0.6	1	R+0.2
Premise	B/C	+0.7	1	D+0.2
Public Religion Research Institute	A/B	0.0	1	D+0.0
QEV Analytics	B/C	+0.7	1
Rainmaker Media Group	B/C	+0.8	1	D+0.2
Riggs Research Services	B/C	+1.3	1	D+0.8
Rivercity Polling	B/C	+0.6	1	R+0.2
Rossman Group	B/C	+0.6	1	D+0.1
Schoen Cooperman Research	B/C	+0.6	1	R+0.1
Seven Letter Insight	B/C	+0.6	1	D+0.1
Singularis Group	B/C	+0.5	1	R+0.0
Sky Research	B/C	+0.7	1	R+0.3
SmithJohnson Opinion Research	B/C	+0.7	1	R+0.2
SMS Research & Marketing Services	B/C	+0.7	1	R+0.1
Southern Research Group	B/C	+0.7	1	D+0.1
Targeted Persuasion	B/C	+0.5	1
TeleResearch Corporation	B/C	+0.7	1
The Kitchens Group	B/C	+0.8	1	D+0.2
The Polling Company Inc./National Research Inc.	B/C	+0.5	1	R+0.1
Thirty-Ninth Street Strategies	B/C	+0.6	1	R+0.1
Tomahawk Strategies	B/C	+1.2	1	D+0.9
Triumph Campaigns	B/C	+0.6	1	R+0.1
Tulsa Surveys	B/C	+0.7	1	R+0.1
University of Florida Bob Graham Center for Public Service	B/C	+0.1	1	D+0.0
University of Georgia Survey Research Center	B/C	+0.7	1	R+0.1
University of Houston Center for Public Policy	B/C	+0.5	1
University of Illinois at Chicago	B/C	+0.7	1	R+0.1
University of Nevada, Las Vegas Cannon Survey Center	B/C	+0.6	1
University of North Carolina School of Journalism and Mass Communication	B/C	+0.7	1	D+0.2
University of Wisconsin-Milwaukee Center for Urban Initiatives and Research	B/C	+0.6	1	R+0.0
VCreek/AMG	B/C	+0.8	1	D+0.4
Victoria Research & Consulting	B/C	+0.6	1	D+0.1
Victory Enterprises	B/C	+0.9	1	R+0.5
Vox Populi Communications	B/C	+0.6	1
War Room Logistics	B/C	+0.6	1
Washington College	B/C	+0.5	1	D+0.3
Wick Communications	B/C	+0.6	1	D+0.0
Wood Communications Group	B/C	+0.6	1	D+0.0

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FiveThirtyEight’s pollster ratings are calculated by analyzing the historical accuracy of each polling organization’s polls along with its methodology. Accuracy scores are adjusted for the type of election polled, the poll’s sample size, the performance of other polls surveying the same race and other factors. We also calculate measures of statistical bias in the polls. When a pollster publishes multiple versions of the same survey (for example, versions with and without third-party candidates included), FiveThirtyEight uses an average of the different versions to calculate the pollster’s rating. However, all versions of these polls are listed here. Read more about our methodology»

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Design and development by Elena Mejía and Aaron Bycoffe. Research by Mary Radcliffe, Cooper Burton and Dhrumil Mehta. Copy editing by Andrew Mangan. Visual editing by Christopher Groskopf. Statistical model by Nate Silver.

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