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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

Primary · D primary

Vermont · Governor

Janoo +7

Amanda Janoo 26% · Aly Richards 19%

Field dates: Jul 20, 2026
Sample: 560 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Vermont · Governor

Scott +11

Don't know 17% · Someone else 4% · Phil Scott 44% · Dean Roy 0% · Amanda Janoo 33% · June Goodband 2%

Field dates: Jul 15–Jul 20, 2026
Sample: 925 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Maine · Senate

Jackson +3

Don't know 3% · Someone else 2% · Susan Collins 46% · Troy Jackson 49%

Field dates: Jul 15–Jul 20, 2026
Sample: 1,178 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

HOU-VT-01

Balint +39

Don't know 8% · Someone else 1% · Adam Ortiz 2% · Mark Coester 25% · Becca Balint 64%

Field dates: Jul 15–Jul 20, 2026
Sample: 948 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Vermont · Governor

Scott +8

Don't know 17% · Someone else 3% · Phil Scott 43% · Dean Roy 1% · Aly Richards 35% · June Goodband 2%

Field dates: Jul 15–Jul 20, 2026
Sample: 925 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Maine · Governor

Pingree +14

Someone else 1% · Don't know 8% · Hannah Pingree 49% · Bobby Charles 35% · Rick Bennett 6%

Field dates: Jul 15–Jul 20, 2026
Sample: 1,150 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Rhode Island · Governor

Foulkes +16

Don't know 20% · Someone else 1% · Generic Republican 22% · Helena Foulkes 38% · Ken Block 19%

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

Primary · D primary

Rhode Island · Senate

Reed +38

Connor Burbridge 25% · Jack Reed 63%

Field dates: Jun 23, 2026
Sample: 337 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

Connecticut · Governor

Lamont +13

Don't know 12% · Someone else 2% · Ned Lamont 49% · Ryan Fazio 36%

Field dates: Jun 18–Jun 23, 2026
Sample: 821 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Primary · R primary

New Hampshire · Senate

Sununu +39

Scott Brown 20% · John E. Sununu 59%

Field dates: Jun 23, 2026
Sample: 978 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

New Hampshire · Senate

Pappas +14

Don't know 8% · Someone else 2% · Scott Brown 38% · Chris Pappas 52%

Field dates: Jun 18–Jun 23, 2026
Sample: 1,980 LV
Sponsor / client: Not reported in archive
Partisan sponsorship: No partisan sponsorship flag

Race

New Hampshire · Governor

Ayotte +5

Don't know 13% · Someone else 3% · Cinde Warmington 39% · Kelly Ayotte 44%

Field dates: Jun 18–Jun 23, 2026
Sample: 2,221 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.