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Pollster file

Harper Polling

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
11
Mean absolute error
2.90percentage points
Historical bias
D+0.71
Represented cycles
52013–2020
Current archive
16canonical records
History span
Jun 11, 2013through Oct 24, 2020
Identity

Known names and relationships

Known aliases
Harper Polling (R)
Organization type
Single canonical organization
Cycles represented
2013 · 2014 · 2015 · 2016 · 2020

11 eligible historical polls across 5 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 2026-10-24. Archive records may be newer than the sealed forecast; inclusion here does not mean the forecast uses them.

12 shown · 16 total

Cooper +10

Roy Cooper 49% · Michael Whatley 39% · Shannon Bray 3% · Michael Dublin 2%

Field dates
Oct 18–Oct 20, 2026
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +9.6

Don't know 6.5% · Roy Cooper 51.6% · Michael Whatley 42%

Field dates
Oct 18–Oct 20, 2026
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +15.1

Don't know 12.3% · Someone else 0% · Shannon Bray 2.9% · Michael Dublin 1.5% · Roy Cooper 49.2% · Michael Whatley 34.1%

Field dates
Sep 13–Sep 15, 2026
Sample
608 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +12.5

Don't know 4.8% · Someone else 4.7% · Michael Whatley 39% · Roy Cooper 51.5%

Field dates
Aug 9–Aug 10, 2026
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Little +5

Matt Little 45% · Eric Pratt 40%

Field dates
Jun 18–Jun 21, 2026
Sample
415 LV
Sponsor / client
Not reported in archive
Partisan sponsorship
Republican-sponsored
Cooper +11.1

Don't know 7.8% · Roy Cooper 49.8% · Someone else 3.7% · Michael Whatley 38.7%

Field dates
May 10–May 11, 2026
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +7.8

Don't know 6.1% · Someone else 3.9% · Michael Whatley 41.1% · Roy Cooper 48.9%

Field dates
Mar 22–Mar 23, 2026
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +8.7

Someone else 4% · Roy Cooper 47.3% · Michael Whatley 38.6%

Field dates
Nov 9–Nov 10, 2025
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +10.1

Someone else 3.9% · Roy Cooper 48.1% · Don Brown 38%

Field dates
Nov 9–Nov 10, 2025
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
Cooper +4.2

Don't know 8.4% · Someone else 3.6% · Roy Cooper 46.1% · Michael Whatley 41.9%

Field dates
Sep 14–Sep 15, 2025
Sample
600 LV
Sponsor / client
Carolina Journal
Partisan sponsorship
No partisan sponsorship flag
See this pollster in the Full Poll Archive →
Certified-result history

Eligible historical observations

11 shown · 11 total

CycleRaceTypeField endSamplePollResultError
2020NC · SenateSen-G2020-10-24504D+3.0R+1.8D+4.8
2020NC · PresidentPres-G2020-10-24504D+1.0R+1.4D+2.4
2020NC · GovernorGov-G2020-10-24504D+10.0D+4.5D+5.5
2016PA · SenateSen-G2016-11-035040R+1.4D+1.4
2016PA · PresidentPres-G2016-11-035040R+0.7D+0.7
2015LA · GovernorGov-G2015-10-17612D+10.0D+16.9R+6.9
2014NC · SenateSen-G2014-10-29511R+2.5R+1.6R+0.9
2014NY-21 · HouseHouse-G2014-10-28560R+14.0R+21.3D+7.3
2014PA · GovernorGov-G2014-10-27680D+10.0D+9.9D+0.1
2013NJ · SenateSen-G2013-10-14778D+11.0D+10.9D+0.1
2013MA · SenateSen-G2013-06-11498D+12.0D+10.2D+1.8

1 further row is held in this pollster’s history shard as within-party or nonpartisan contests (Prim). Those carry no D/R orientation, so they are excluded from the error, bias and coverage figures above and from the table.

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.