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Pollster file

University of New Hampshire Survey Center

Historical accuracy is measured against certified results. Current-cycle records come from the canonical, deduplicated archive and do not by themselves change the sealed forecast.

Historical polls: 116
Mean absolute error: 5.93percentage points
Historical bias: D+2.31
Represented cycles: 132000–2022
Current archive: 156canonical records
History span: Nov 3, 2000through Nov 4, 2022

Identity

Known names and relationships

Known aliases: University of New Hampshire
Organization type: Single canonical organization
Cycles represented: 2000 · 2002 · 2004 · 2006 · 2008 · 2010 · 2012 · 2013 · 2014 · 2016 · 2018 · 2020 · 2022

116 eligible historical polls across 13 represented cycles passed the published history identity checks. Historical bias is descriptive and is kept separate from sponsor or client affiliation.

Canonical 2025–2026 archive

Current-cycle records

Archive source date 2026-09-09 · bundled copy. Archive records may be newer than the sealed forecast; inclusion here does not mean the forecast uses them.

12 shown · 156 total

Race

Massachusetts · Senate

Markey +16

Don't know 16% · Someone else 0% · John Deaton 34% · Ed Markey 50%

Field dates: Jun 18–Jun 23, 2026
Sample: 618 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Rhode Island · Governor

Tied

Don't know 21% · Someone else 2% · Generic Republican 23% · Daniel McKee 27% · Ken Block 27%

Field dates: Jun 18–Jun 23, 2026
Sample: 630 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Primary · R primary

Rhode Island · Governor

Pelino +25

Aaron Guckian 17% · Elaine Pelino 42% · Robert Raimondo 1%

Field dates: Jun 23, 2026
Sample: 145 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Vermont · Governor

Scott +15

Don't know 26% · Someone else 1% · Phil Scott 42% · Dean Roy 3% · Amanda Janoo 27% · June Goodband 1%

Field dates: Jun 18–Jun 23, 2026
Sample: 867 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

HOU-VT-01

Balint +31

Don't know 15% · Someone else 0% · Adam Ortiz 1% · Mark Coester 26% · Becca Balint 57%

Field dates: Jun 18–Jun 23, 2026
Sample: 871 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Maine · Senate

Platner +9

Don't know 6% · Someone else 2% · Graham Platner 51% · Susan Collins 42%

Field dates: May 21–May 25, 2026
Sample: 1,250 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

New Hampshire · Governor

Ayotte +8

Don't know 10% · Someone else 4% · Cinde Warmington 39% · Kelly Ayotte 47%

Field dates: Apr 17–Apr 21, 2026
Sample: 1,117 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Primary · D primary

New Hampshire · Senate

Pappas +43

Karishma Manzur 18% · Chris Pappas 61% · Jared Sullivan 1%

Field dates: Apr 21, 2026
Sample: 481 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Primary · R primary

New Hampshire · Senate

Sununu +37

Scott Brown 19% · John E. Sununu 56%

Field dates: Apr 21, 2026
Sample: 562 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

New Hampshire · Senate

Pappas +14

Don't know 7% · Someone else 3% · Chris Pappas 52% · Scott Brown 38%

Field dates: Apr 17–Apr 21, 2026
Sample: 1,115 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

New Hampshire · Senate

Pappas +7

Don't know 6% · Someone else 4% · John Sununu 42% · Chris Pappas 49%

Field dates: Apr 17–Apr 21, 2026
Sample: 1,130 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Primary · D primary

Rhode Island · Governor

Foulkes +34

Helena Foulkes 45% · Dan McKee 11% · Gregory Stevens 3%

Field dates: Apr 20, 2026
Sample: 327 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

See this pollster in the Full Poll Archive →

Certified-result history

Eligible historical observations

50 shown · 116 total

Cycle	Race	Type	Field end	Sample	Poll	Result	Error
2012	2012_House-G_NH-1	House-G	2012-11-03	365	0	D+3.8	R+3.8
2012	2012_Gov-G_NH	Gov-G	2012-11-03	789	D+9.0	D+12.1	R+3.1
2012	2012_Pres-G_NH	Pres-G	2012-11-01	502	0	D+5.6	R+5.6
2012	2012_Gov-G_NH	Gov-G	2012-11-01	502	D+5.0	D+12.1	R+7.1
2012	2012_Sen-G_MA	Sen-G	2012-10-26	583	0	D+7.5	R+7.5
2012	2012_Pres-G_MA	Pres-G	2012-10-26	583	D+14.0	D+23.2	R+9.2
2012	2012_Pres-G_NH	Pres-G	2012-10-19	773	D+9.0	D+5.6	D+3.4
2012	2012_House-G_NH-2	House-G	2012-10-19	408	D+3.0	D+4.8	R+1.8
2012	2012_House-G_NH-1	House-G	2012-10-19	364	R+3.0	D+3.8	R+6.8
2012	2012_Gov-G_NH	Gov-G	2012-10-19	773	D+8.0	D+12.1	R+4.1
2010	2010_Sen-G_NH	Sen-G	2010-10-29	885	R+18.0	R+23.2	D+5.2
2010	2010_House-G_NH-2	House-G	2010-10-29	451	D+3.0	R+1.6	D+4.6
2010	2010_House-G_NH-1	House-G	2010-10-29	434	R+7.0	R+11.6	D+4.6
2010	2010_Gov-G_NH	Gov-G	2010-10-29	885	D+7.0	D+7.6	R+0.6
2010	2010_House-G_MA-4	House-G	2010-10-20	385	D+13.0	D+10.5	D+2.5
2010	2010_House-G_MA-10	House-G	2010-10-20	349	D+4.0	D+4.5	R+0.5
2010	2010_Gov-G_MA	Gov-G	2010-10-20	519	D+4.0	D+6.4	R+2.4
2010	2010_Sen-GS_MA	Sen-G	2010-01-04	554	D+17.0	R+4.8	D+21.8
2008	2008_Sen-G_NH	Sen-G	2008-11-01	816	D+6.0	D+6.3	R+0.3
2008	2008_Pres-G_NH	Pres-G	2008-11-01	812	D+11.0	D+9.6	D+1.4
2008	2008_House-G_NH-2	House-G	2008-11-01	404	D+21.0	D+15.0	D+6.0
2008	2008_House-G_NH-1	House-G	2008-11-01	413	D+5.0	D+5.9	R+0.9
2008	2008_Gov-G_NH	Gov-G	2008-11-01	831	D+47.0	D+42.6	D+4.4
2008	2008_Sen-G_NH	Sen-G	2008-10-28	687	D+5.0	D+6.3	R+1.3
2008	2008_Pres-G_NH	Pres-G	2008-10-28	692	D+16.0	D+9.6	D+6.4
2008	2008_House-G_NH-2	House-G	2008-10-28	303	D+28.0	D+15.0	D+13.0
2008	2008_House-G_NH-1	House-G	2008-10-28	308	D+3.0	D+5.9	R+2.9
2008	2008_Gov-G_NH	Gov-G	2008-10-28	619	D+51.0	D+42.6	D+8.4
2008	2008_Sen-G_NH	Sen-G	2008-10-25	687	D+11.0	D+6.3	D+4.7
2008	2008_Pres-G_NH	Pres-G	2008-10-25	692	D+16.0	D+9.6	D+6.4
2008	2008_House-G_NH-2	House-G	2008-10-25	344	D+22.0	D+15.0	D+7.0
2008	2008_House-G_NH-1	House-G	2008-10-25	341	D+8.0	D+5.9	D+2.1
2008	2008_Gov-G_NH	Gov-G	2008-10-25	698	D+50.0	D+42.6	D+7.4
2008	2008_Sen-G_NH	Sen-G	2008-10-20	725	D+13.0	D+6.3	D+6.7
2008	2008_Pres-G_NH	Pres-G	2008-10-20	725	D+15.0	D+9.6	D+5.4
2008	2008_House-G_NH-2	House-G	2008-10-20	349	D+26.0	D+15.0	D+11.0
2008	2008_House-G_NH-1	House-G	2008-10-20	358	D+5.0	D+5.9	R+0.9
2008	2008_Gov-G_NH	Gov-G	2008-10-20	725	D+50.0	D+42.6	D+7.4
2006	2006_House-G_NH-2	House-G	2006-11-04	304	D+4.5	D+7.1	R+2.6
2006	2006_House-G_NH-1	House-G	2006-11-04	331	R+9.0	D+2.6	R+11.6
2006	2006_Gov-G_NH	Gov-G	2006-11-04	641	D+56.0	D+48.3	D+7.7
2006	2006_House-G_NH-2	House-G	2006-10-31	320	0	D+7.1	R+7.1
2006	2006_House-G_NH-1	House-G	2006-10-31	340	R+5.0	D+2.6	R+7.6
2006	2006_Gov-G_NH	Gov-G	2006-10-31	663	D+52.0	D+48.3	D+3.7
2006	2006_Sen-G_MA	Sen-G	2006-10-24	585	D+41.0	D+38.8	D+2.2
2006	2006_Gov-G_MA	Gov-G	2006-10-24	585	D+25.0	D+20.3	D+4.7
2004	2004_Sen-G_NH	Sen-G	2004-10-30	957	R+36.0	R+32.5	R+3.5
2004	2004_Pres-G_NH	Pres-G	2004-10-30	963	D+1.0	D+1.4	R+0.4
2004	2004_House-G_NH-2	House-G	2004-10-30	464	R+18.0	R+20.1	D+2.1
2004	2004_House-G_NH-1	House-G	2004-10-30	492	R+19.0	R+26.8	D+7.8

Method · historical final-three-week D/R general-election rows plus verified historical supplement; min n=5

Definition · bias_D is poll D-R margin minus actual D-R margin; positive overstates Democrats.

A missing sample, sponsor or source is labeled unavailable; it is never reconstructed.

Poll data via VoteHub, used under CC BY 4.0. Poll data from The New York Times, used under CC BY 4.0.