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FiveThirtyEight's Pollster Ratings: pollster-ratings.csv

This directory contains the data behind FiveThirtyEight's pollster ratings.

See also:

Past data:

pollster-stats-full.xlsx contains a spreadsheet with all of the summary data and calculations involved in determining the pollster ratings as well as descriptions for each column.

pollster-ratings.csv has ratings and calculations for each pollster. A copy of this data and descriptions for each column can also be found in pollster-stats-full.xlsx.

raw-polls.csv contains all of the polls analyzed to give each pollster a grade. Descriptions for each column are in the table below.

Header Definition
pollno FiveThirtyEight poll ID number
race Election polled
year Year of election (not year of poll)
location Location (state or Congressional district, or "US" for national polls)
type_simple Type of election (5 categories)
type_detail Detailed type of election (this distinguishes between Republican and Democratic primaries, for example, whereas type_simple does not)
pollster Pollster name
partisan Flag for internal/partisan poll. "D" indicates Democratic poll, "R" indicates Republican poll, "I" indicates poll put out by independent candidate's campaign. Note that different sources define these categories differently and our categorization will often reflect the original source's definition. In other words, these definitions may be inconsistent and should be used carefully.
polldate Median field date of the poll
samplesize Sample size of the poll. Where missing, this is estimated from the poll's margin of error, or similar polls conducted by the same polling firm. A sample size of 600 is used if no better estimate is available.
cand1_name Name of Candidate #1. Candidates #1 and #2 are defined as the top two finishers in the election (regardless of whether or not they were the top two candidates in the poll). In races where a Democrat and a Republican were the top two finishers, Candidate #1 is the Democrat and simply listed as "Democrat".
cand1_pct Candidate #1's share of the vote in the poll.
cand2_name Name of Candidate #2. Candidates #1 and #2 are defined as the top two finishers in the election (regardless of whether or not they were the top two candidates in the poll). In races where a Democrat and a Republican were the top two finishers, Candidate #2 is the Republican and simply listed as "Republican"
cand2_pct Candidate #2's share of the vote in the poll.
cand3_pct Share of the vote for the top candidate listed in the poll, other than Candidate #1 and Candidate #2.
margin_poll Projected margin of victory (defeat) for Candidate #1. This is calculated as cand1_pct - cand2_pct. In races between a Democrat and a Republican, positive values indicate a Democratic lead; negative values a Repubican lead.
electiondate Date of election
cand1_actual Actual share of vote for Candidate #1
cand2_actual Actual share of vote for Candidate #2
margin_actual Actual margin in the election. This is calculated as cand1_actual - cand2_actual. In races between a Democrat and a Republican, positive values indicate a Democratic win; negative values a Republican win.
error Absolute value of the difference between the actual and polled result. This is calculated as abs(margin_poll - margin_actual)
bias Statistical bias of the poll. This is calculated only for races in which the top two finishers were a Democrat and a Republican. It is calculated as margin_poll - margin_actual. Positive values indicate a Democratic bias (the Democrat did better in the poll than the election). Negative values indicate a Republican bias.
rightcall Flag to indicate whether the pollster called the outcome correctly, i.e. whether the candidate they had listed in 1st place won the election. A 1 indicates a correct call and a 0 an incorrect call; 0.5 indicates that the pollster had two or more candidates tied for the lead and one of the tied candidates won.
comment Additional information, such as alternate names for the poll.

Data license: CC Attribution 4.0 License · Data source: fivethirtyeight/data on GitHub

396 rows

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Suggested facets: NCPP / AAPOR / Roper, Exclusively Live Caller With Cellphones, Methodology, Banned by 538, 538 Grade, Mean-Reverted Advanced Plus Minus

Link rowid Pollster # of Polls NCPP / AAPOR / Roper Exclusively Live Caller With Cellphones Methodology Banned by 538 Historical Advanced Plus-Minus Predictive Plus-Minus 538 Grade Mean-Reverted Bias Races Called Correctly Misses Outside MOE Simple Average Error Simple Expected Error Simple Plus-Minus Advanced Plus-Minus Mean-Reverted Advanced Plus Minus Predictive Plus-Minus # of Polls for Bias Analysis Bias Mean-Reverted Bias.1 House Effect
1 Selzer & Co. 43 yes yes Live no -1.9 -1.4 A+ R +0.0 86% 21% 4.2 5.6 -1.4 -1.9 -1.1 -1.4 30 R +0.0 R +0.0 D +0.1
2 Monmouth University 95 yes yes Live no -1.5 -1.3 A+ D +1.4 80% 17% 5.3 6.2 -0.8 -1.5 -1.1 -1.3 65 D +2.1 D +1.4 R +0.7
3 Field Research Corp. (Field Poll) 25 yes yes Live no -2.5 -1.1 A+ R +1.2 100% 16% 3.9 5.7 -1.8 -2.5 -1.1 -1.1 18 R +3.3 R +1.2 D +0.6
4 ABC News/Washington Post 60 yes yes Live no -1.3 -1.1 A+ D +0.6 78% 5% 2.9 4.6 -1.8 -1.3 -0.9 -1.1 55 D +0.9 D +0.6 D +1.5
5 Elway Research 21 yes yes Live no -2.2 -1.1 A+ D +0.5 90% 5% 3.9 5.9 -1.9 -2.2 -0.9 -1.1 20 D +1.2 D +0.5 D +3.2
6 Ciruli Associates 17 yes yes Live no -2.1 -1.0 A+ R +0.7 94% 0% 3.6 5.6 -2.0 -2.1 -0.7 -1.0 16 R +2.1 R +0.7 R +2.5
7 SurveyUSA 777 yes no IVR/Online/Live no -1.1 -0.9 A D +0.1 90% 16% 4.6 5.6 -1.0 -1.1 -1.0 -0.9 615 D +0.1 D +0.1 R +0.3
8 Muhlenberg College 26 yes yes Live no -1.3 -0.9 A R +0.2 83% 8% 3.5 5.3 -1.9 -1.3 -0.6 -0.9 25 R +0.5 R +0.2 D +0.0
9 Marist College 159 yes yes Live no -0.9 -0.9 A R +0.5 85% 19% 5.2 6.0 -0.8 -0.9 -0.7 -0.9 99 R +0.6 R +0.5 D +0.0
10 Grove Insight 29 no yes Live no -2.3 -0.8 A D +0.5 90% 7% 3.1 5.1 -2.0 -2.3 -1.1 -0.8 29 D +1.0 D +0.5 D +3.4
11 National Journal 12 yes yes Live no -2.4 -0.8 A R +0.2 100% 0% 2.6 5.3 -2.7 -2.4 -0.7 -0.8 12 R +0.6 R +0.2 D +0.3
12 Public Policy Institute of California 12 yes yes Live no -2.0 -0.8 A R +0.7 100% 8% 4.1 6.2 -2.1 -2.0 -0.6 -0.8 8 R +3.4 R +0.7 R +1.0
13 University of Cincinnati (Ohio Poll) 38 yes yes Live no -1.0 -0.8 A R +1.5 93% 16% 3.7 5.5 -1.8 -1.0 -0.6 -0.8 29 R +3.0 R +1.5 R +2.3
14 Siena College 60 yes yes Live no -0.9 -0.8 A D +0.1 82% 15% 4.9 5.3 -0.3 -0.9 -0.6 -0.8 56 D +0.1 D +0.1 R +0.7
15 Fairleigh Dickinson University (PublicMind) 18 yes yes Live no -1.4 -0.7 A D +0.0 94% 6% 4.1 5.4 -1.3 -1.4 -0.5 -0.7 17 D +0.1 D +0.0 D +3.1
16 Fox News/Anderson Robbins Research/Shaw & Co. Research 31 yes yes Live no -0.9 -0.7 A D +0.6 69% 35% 5.6 6.0 -0.4 -0.9 -0.5 -0.7 16 D +1.8 D +0.6 D +0.9
17 Marquette University Law School 9 yes yes Live no -2.5 -0.7 A D +0.3 78% 11% 3.3 5.8 -2.5 -2.5 -0.6 -0.7 6 D +1.5 D +0.3 R +0.0
18 Research & Polling Inc. 27 no yes Live no -1.7 -0.6 A R +0.5 85% 7% 4.3 5.6 -1.3 -1.7 -0.8 -0.6 26 R +1.1 R +0.5 R +1.2
19 Behavior Research Center (Rocky Mountain) 7 yes yes Live no -2.6 -0.6 A- D +0.1 71% 0% 3.5 6.5 -3.0 -2.6 -0.5 -0.6 5 D +0.6 D +0.1 R +2.1
20 Blum & Weprin Associates 18 no yes Live no -2.6 -0.6 A- R +1.0 94% 11% 4.6 5.2 -0.6 -2.6 -1.0 -0.6 16 R +3.0 R +1.0 D +1.2
21 CBS News/New York Times 53 yes yes Live no -0.5 -0.5 A- D +0.4 76% 17% 4.6 5.3 -0.7 -0.5 -0.3 -0.5 43 D +0.7 D +0.4 D +1.8
22 University of Arkansas 6 yes yes Live no -3.1 -0.5 A- D +0.6 100% 0% 3.8 5.3 -1.6 -3.1 -0.5 -0.5 6 D +3.8 D +0.6 R +3.9
23 University of Connecticut 7 yes yes Live no -1.7 -0.5 A- R +0.4 93% 0% 3.6 5.5 -1.9 -1.7 -0.3 -0.5 7 R +1.9 R +0.4 R +2.0
24 Los Angeles Times 38 yes yes Live no -0.4 -0.5 A- R +0.4 86% 16% 5.0 6.2 -1.2 -0.4 -0.2 -0.5 23 R +1.0 R +0.4 D +0.7
25 IBD/TIPP 21 no yes Live no -1.5 -0.5 A- R +0.8 71% 5% 2.2 3.7 -1.5 -1.5 -0.6 -0.5 21 R +1.9 R +0.8 R +1.4
26 RKM Research and Communications Inc. 28 no yes Live no -1.3 -0.4 A- R +0.2 88% 18% 5.3 6.2 -0.9 -1.3 -0.6 -0.4 20 R +0.5 R +0.2 R +1.5
27 MassINC Polling Group 14 no yes Live no -2.4 -0.4 A- R +0.4 86% 7% 3.2 6.3 -3.1 -2.4 -0.8 -0.4 10 R +1.7 R +0.4 R +0.9
28 Elon University 7 yes yes Live no -1.2 -0.4 A- D +0.5 50% 0% 3.2 4.7 -1.4 -1.2 -0.2 -0.4 7 D +2.7 D +0.5 D +1.1
29 Quinnipiac University 195 yes yes Live no -0.3 -0.4 A- D +0.1 85% 23% 4.6 5.5 -0.9 -0.3 -0.3 -0.4 143 D +0.1 D +0.1 D +0.5
30 SSRS 5 yes yes Live no -1.5 -0.4 A- R +0.1 20% 20% 3.1 4.1 -1.0 -1.5 -0.2 -0.4 5 R +0.5 R +0.1 D +1.0
31 Angus Reid Global 30 no no Online no -1.9 -0.4 A- R +1.3 93% 3% 3.2 4.9 -1.7 -1.9 -0.9 -0.4 30 R +2.6 R +1.3 D +0.9
32 University of North Florida 6 yes yes Live no -1.0 -0.4 A- D +0.5 50% 0% 4.0 6.1 -2.1 -1.0 -0.2 -0.4 4 D +4.0 D +0.5 D +1.6
33 Western New England University 12 yes yes Live no -0.4 -0.3 A- R +1.1 88% 25% 5.6 5.7 -0.1 -0.4 -0.1 -0.3 11 R +3.9 R +1.1 R +0.3
34 NBC News/Wall Street Journal 27 yes yes Live no -0.2 -0.3 A- D +0.8 72% 15% 4.2 5.1 -0.9 -0.2 -0.1 -0.3 22 D +1.9 D +0.8 D +1.4
35 St. Norbert College 12 no yes Live no -1.8 -0.3 A- D +0.3 88% 0% 3.9 6.1 -2.3 -1.8 -0.5 -0.3 11 D +0.9 D +0.3 D +2.9
36 Mason-Dixon Polling & Research Inc. 420 no yes Live no -0.5 -0.3 B+ R +0.7 86% 20% 5.2 5.5 -0.2 -0.5 -0.5 -0.3 363 R +0.8 R +0.7 R +1.0
37 Lake Research Partners 10 no yes Live no -2.0 -0.3 B+ D +0.6 80% 10% 3.9 5.7 -1.7 -2.0 -0.5 -0.3 10 D +2.4 D +0.6 D +3.3
38 Abt Associates 8 yes yes Live no -0.4 -0.3 B+ D +0.7 88% 13% 4.1 5.2 -1.1 -0.4 -0.1 -0.3 7 D +3.8 D +0.7 D +0.7
39 Castleton University 3 yes yes Live no -1.2 -0.3 B+   100% 0% 9.9 9.7 0.3 -1.2 -0.1 -0.3 0      
40 Emerson College 85 yes no IVR no -0.6 -0.3 B+ D +0.1 75% 16% 5.6 6.0 -0.3 -0.6 -0.4 -0.3 58 D +0.2 D +0.1 R +1.8
41 EPIC-MRA 45 no yes Live no -0.7 -0.3 B+ R +0.2 80% 18% 5.1 5.7 -0.5 -0.7 -0.4 -0.3 40 R +0.3 R +0.2 D +0.8
42 High Point University 2 yes yes Live no -4.6 -0.3 B+ D +0.0 100% 0% 1.0 4.5 -3.5 -4.6 -0.3 -0.3 2 D +0.1 D +0.0 D +1.8
43 Indiana University 2 yes yes Live no -4.4 -0.3 B+ D +0.1 100% 0% 0.9 5.8 -4.9 -4.4 -0.3 -0.3 2 D +0.9 D +0.1 D +4.1
44 CNN/Opinion Research Corp. 98 yes yes Live no -0.1 -0.2 B+ D +0.1 72% 23% 5.4 5.7 -0.3 -0.1 -0.1 -0.2 70 D +0.1 D +0.1 D +0.1
45 Fleming & Associates 15 no yes Live no -1.3 -0.2 B+ R +0.3 100% 0% 5.1 5.9 -0.8 -1.3 -0.4 -0.2 13 R +1.0 R +0.3 R +0.2
46 Princeton Survey Research Associates International 33 yes yes Live no 0.0 -0.2 B+ D +0.3 70% 27% 4.8 5.0 -0.2 0.0 0.0 -0.2 31 D +0.5 D +0.3 R +0.2
47 Market Shares Corp. 26 yes yes Live no 0.1 -0.2 B+ R +1.7 85% 19% 6.8 5.6 1.2 0.1 0.0 -0.2 22 R +4.1 R +1.7 R +2.0
48 Ward Research (Honolulu Star-Advertiser) 14 no yes Live no -1.3 -0.2 B+ R +0.6 75% 29% 6.0 5.9 0.1 -1.3 -0.4 -0.2 14 R +1.7 R +0.6 D +0.7
49 University of Massachusetts Lowell 17 no yes Live no -1.1 -0.2 B+ R +0.2 88% 12% 4.5 6.4 -1.9 -1.1 -0.4 -0.2 9 R +0.8 R +0.2 R +0.7
50 University of South Alabama 8 no yes Live no -3.1 -0.2 B+ R +0.4 100% 0% 2.8 5.2 -2.4 -3.1 -0.7 -0.2 8 R +1.9 R +0.4 R +2.2
51 Winthrop University 1 yes yes Live no -3.9 -0.2 B+ D +0.0 100% 0% 0.2 4.2 -4.0 -3.9 -0.1 -0.2 1 D +0.2 D +0.0 R +0.9
52 University of Florida 1 yes yes Live no -2.0 -0.2 B+ D +0.0 50% 0% 1.1 4.9 -3.8 -2.0 -0.1 -0.2 1 D +1.1 D +0.0 R +0.9
53 National Research Inc. 8 no yes Live no -1.9 -0.2 B+ R +0.5 81% 13% 5.1 6.4 -1.4 -1.9 -0.4 -0.2 6 R +2.7 R +0.5 R +4.6
54 Stockton University 8 no yes Live no -1.9 -0.2 B+ D +0.3 100% 13% 3.6 5.2 -1.6 -1.9 -0.4 -0.2 8 D +1.5 D +0.3 D +0.2
55 Suffolk University 74 no yes Live no -0.4 -0.1 B+ D +0.6 81% 19% 5.0 6.4 -1.3 -0.4 -0.3 -0.1 44 D +1.0 D +0.6 D +2.0
56 Market Research Insight 7 no yes Live no -4.6 -0.1 B+ D +0.1 100% 0% 1.8 5.0 -3.2 -4.6 -0.9 -0.1 7 D +0.3 D +0.1 D +2.0
57 Montana State University Billings 7 no yes Live no -3.8 -0.1 B+ D +0.6 57% 0% 3.6 5.9 -2.3 -3.8 -0.7 -0.1 7 D +3.0 D +0.6 D +2.6
58 Data Orbital 7 no yes Live no -2.6 -0.1 B+ D +0.1 100% 0% 1.8 4.6 -2.8 -2.6 -0.5 -0.1 7 D +0.4 D +0.1 R +2.6
59 Riley Research Associates 7 no yes Live no -2.4 -0.1 B+ R +0.1 100% 0% 2.7 5.6 -2.9 -2.4 -0.5 -0.1 7 R +0.6 R +0.1 R +1.4
60 RT Strategies 42 yes yes Live no 0.2 -0.1 B+ D +1.1 71% 40% 5.8 5.3 0.5 0.2 0.1 -0.1 42 D +1.9 D +1.1 D +3.5
61 University of Washington 9 no yes Live no -1.4 -0.1 B+ D +0.1 100% 0% 3.7 5.1 -1.4 -1.4 -0.3 -0.1 9 D +0.3 D +0.1 D +3.4
62 Davis, Hibbitts & Midghall Inc. 14 no yes Live no -0.9 -0.1 B+ R +0.1 86% 7% 4.1 5.4 -1.3 -0.9 -0.3 -0.1 12 R +0.3 R +0.1 D +0.3
63 Ipsos 56 yes no Online no -0.3 -0.1 B+ D +0.6 75% 18% 4.4 4.8 -0.4 -0.3 -0.2 -0.1 50 D +1.0 D +0.6 D +1.3
64 Harstad Strategic Research Inc. 9 no yes Live no -1.3 -0.1 B+ D +0.8 72% 11% 3.8 5.8 -2.0 -1.3 -0.3 -0.1 9 D +3.4 D +0.8 D +3.1
65 Pan Atlantic SMS Group 17 no yes Live no -0.7 -0.1 B+ D +0.9 91% 24% 6.8 6.4 0.4 -0.7 -0.3 -0.1 15 D +2.8 D +0.9 D +1.5
66 Garin-Hart-Yang Research Group 23 no yes Live no -0.5 -0.1 B+ D +1.5 85% 35% 5.7 5.7 0.0 -0.5 -0.2 -0.1 23 D +3.5 D +1.5 D +4.6
67 American Viewpoint 6 no yes Live no -1.8 0.0 B+ R +0.6 67% 0% 4.0 5.6 -1.7 -1.8 -0.3 0.0 6 R +3.8 R +0.6 R +3.2
68 Greenberg Quinlan Rosner/American Viewpoint 7 no yes Live no -1.5 0.0 B+ R +0.7 100% 57% 4.8 5.3 -0.4 -1.5 -0.3 0.0 5 R +4.9 R +0.7 D +1.8
69 Christopher Newport University 7 no yes Live no -1.5 0.0 B+ D +0.5 100% 14% 3.9 4.7 -0.8 -1.5 -0.3 0.0 7 D +2.6 D +0.5 D +1.2
70 Pharos Research Group 31 no yes Live yes -0.3 0.0 F D +0.9 92% 16% 4.0 4.9 -0.9 -0.3 -0.2 0.0 31 D +1.7 D +0.9 D +0.9
71 Temple University 6 yes no Live* no -1.5 0.0 B R +0.4 100% 17% 3.7 5.2 -1.6 -1.5 -0.3 0.0 5 R +2.5 R +0.4 D +0.8
72 Keating Research Inc. 5 no yes Live no -1.8 0.0 B D +0.1 80% 0% 2.4 4.5 -2.1 -1.8 -0.3 0.0 5 D +0.9 D +0.1 D +3.0
73 Clemson University 5 no yes Live no -1.8 0.0 B R +0.5 100% 40% 10.3 7.7 2.6 -1.8 -0.3 0.0 1 R +16.7 R +0.5 R +9.7
74 Public Policy Polling 411 no no IVR/Online no -0.4 0.0 B D +0.3 80% 28% 4.9 5.4 -0.4 -0.4 -0.4 0.0 292 D +0.3 D +0.3 D +1.0
75 Orion Strategies 4 no yes Live no -3.8 0.0 B D +0.1 100% 0% 3.1 6.2 -3.2 -3.8 -0.4 0.0 3 D +1.3 D +0.1 D +6.3
76 Strategies 360 4 no yes Live no -3.0 0.0 B R +0.1 63% 0% 2.0 5.3 -3.3 -3.0 -0.3 0.0 4 R +0.6 R +0.1 D +1.0
77 Landmark Communications 38 no no IVR/Online no -0.9 0.1 B D +1.4 82% 18% 4.7 5.4 -0.7 -0.9 -0.5 0.1 32 D +2.7 D +1.4 R +0.5
78 YouGov 375 no no Online no -0.4 0.1 B D +0.3 88% 25% 5.0 5.1 -0.1 -0.4 -0.3 0.1 327 D +0.3 D +0.3 D +0.3
79 Public Opinion Strategies 57 no yes Live no -0.1 0.1 B R +1.5 68% 23% 6.0 5.8 0.2 -0.1 -0.1 0.1 55 R +2.3 R +1.5 R +4.3
80 Global Strategy Group/National Research (Philadelphia Inquirer) 4 no yes Live no -1.6 0.1 B R +0.3 100% 0% 3.0 5.0 -2.0 -1.6 -0.2 0.1 4 R +2.7 R +0.3 D +0.1
81 Strategic Vision LLC 129 no no Live* yes -0.4 0.1 F R +1.9 88% 16% 4.0 5.0 -1.0 -0.4 -0.4 0.1 106 R +2.4 R +1.9 R +2.3
82 Cole Hargrave Snodgrass & Associates 4 no yes Live no -1.5 0.1 B D +0.3 75% 25% 6.3 6.2 0.2 -1.5 -0.2 0.1 3 D +3.4 D +0.3 R +2.3
83 Tarrance Group 24 no yes Live no -0.2 0.1 B R +0.7 83% 21% 6.2 6.4 -0.2 -0.2 -0.1 0.1 20 R +1.7 R +0.7 R +5.4
84 Iowa State University 3 no yes Live no -3.5 0.1 B   67% 33% 6.3 8.9 -2.6 -3.5 -0.3 0.1 0      
85 Missouri State University 3 no yes Live no -2.6 0.1 B D +0.4 67% 0% 4.4 6.7 -2.3 -2.6 -0.2 0.1 3 D +4.1 D +0.4 D +1.2
86 Voter/Consumer Research 6 no yes Live no -0.9 0.1 B D +0.1 100% 50% 5.5 5.7 -0.2 -0.9 -0.1 0.1 6 D +0.3 D +0.1 R +3.0
87 GBA Strategies 3 no yes Live no -1.9 0.1 B R +0.0 67% 0% 4.7 6.1 -1.4 -1.9 -0.2 0.1 3 R +0.2 R +0.0 D +4.0
88 Mellman Group 21 no yes Live no -0.1 0.1 B D +1.6 79% 14% 4.9 5.1 -0.2 -0.1 -0.1 0.1 21 D +4.0 D +1.6 D +5.4
89 Fox News/Opinion Dynamics Corp. 34 yes no Live* no -0.1 0.1 B R +0.5 72% 9% 3.9 4.9 -1.0 -0.1 0.0 0.1 28 R +1.0 R +0.5 R +1.6
90 GfK Group 21 yes no Online no -0.1 0.1 B D +0.3 88% 19% 3.9 4.8 -0.9 -0.1 -0.1 0.1 21 D +0.6 D +0.3 D +1.2
91 Market Decisions 4 no yes Live no -1.2 0.1 B R +0.1 100% 25% 5.2 5.1 0.0 -1.2 -0.1 0.1 4 R +0.5 R +0.1 D +0.4
92 Richmond Times-Dispatch 4 no yes Live no -1.1 0.1 B D +0.3 100% 0% 3.3 4.6 -1.3 -1.1 -0.1 0.1 4 D +2.9 D +0.3 D +2.4
93 Y2 Analytics 4 no yes Live no -1.0 0.1 B D +0.3 100% 50% 9.6 5.7 3.9 -1.0 -0.1 0.1 3 D +3.3 D +0.3 R +6.5
94 New England College 15 no no IVR no -1.4 0.2 B R +0.6 77% 0% 3.0 4.9 -1.9 -1.4 -0.5 0.2 15 R +1.9 R +0.6 R +3.5
95 McKeon & Associates 2 no yes Live no -6.5 0.2 B R +0.0 100% 0% 0.9 6.5 -5.5 -6.5 -0.4 0.2 1 R +0.9 R +0.0 R +2.0
96 RBI Strategies & Research 2 no yes Live no -6.4 0.2 B R +0.0 100% 0% 0.7 5.4 -4.6 -6.4 -0.4 0.2 1 R +0.7 R +0.0 D +3.5
97 Frederick Polls 2 no yes Live no -5.0 0.2 B R +0.0 75% 0% 2.4 6.4 -4.0 -5.0 -0.3 0.2 1 R +0.6 R +0.0 D +3.0
98 APC Research 2 no yes Live no -3.4 0.2 B D +0.2 100% 0% 2.5 5.4 -2.8 -3.4 -0.2 0.2 2 D +2.5 D +0.2 R +0.6
99 Tulchin Research 2 no yes Live no -3.0 0.2 B R +0.2 100% 0% 3.5 4.9 -1.5 -3.0 -0.2 0.2 2 R +3.5 R +0.2 D +3.2
100 Harper Polling 11 no no IVR no -1.8 0.2 B D +0.1 91% 9% 3.6 5.8 -2.3 -1.8 -0.5 0.2 8 D +0.5 D +0.1 R +1.1

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CREATE TABLE "pollster-ratings/pollster-ratings" (
"Pollster" TEXT,
  "# of Polls" INTEGER,
  "NCPP / AAPOR / Roper" TEXT,
  "Exclusively Live Caller With Cellphones" TEXT,
  "Methodology" TEXT,
  "Banned by 538" TEXT,
  "Historical Advanced Plus-Minus" REAL,
  "Predictive    Plus-Minus" REAL,
  "538 Grade" TEXT,
  "Mean-Reverted Bias" TEXT,
  "Races Called Correctly" TEXT,
  "Misses Outside MOE" TEXT,
  "Simple Average Error" REAL,
  "Simple Expected Error" REAL,
  "Simple Plus-Minus" REAL,
  "Advanced Plus-Minus" REAL,
  "Mean-Reverted Advanced Plus Minus" REAL,
  "Predictive Plus-Minus" REAL,
  "# of Polls for Bias Analysis" INTEGER,
  "Bias" TEXT,
  "Mean-Reverted Bias.1" TEXT,
  "House Effect" TEXT
)
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