House Effects
Monday, September 21, 202643 days until Election Day, November 3, 2026
Senate · 2026

North Carolina Senate

Roy Cooper (D)v.Michael Whatley (R)LIKELY D

Open seat, currently Republican.

Projected margin
D+6.9
Nine in ten outcomes: D+16 to R+2
Chance of winning
90%
Roy Cooper
Polls alone
D+8.6
30 polls from 14 pollsters; latest Sep 17. Weight in projection: 68%.
Fundamentals alone
D+3.3
Weight in projection: 32%.
Polls

The average over time

Each poll is first shifted by its sponsor's and its pollster's measured lean, then weighted by recency and track record. Sample size gets no weight: in 2,000-plus past races it predicted nothing about accuracy. Why.

R+5EvenD+5D+10D+15D+20D+25D+30Aug ’25OctDecFeb ’26AprJunAugOctD+8.6Election Day
adjusted weighted average shading: which side the average favors each poll, as published party-aligned pollster or sponsor
Before any poll

What the fundamentals say

A regression on past Senate races, fit without looking at this year. The national environment term uses the generic ballot after its historical correction (D+5.3).

What each term adds to the estimate
BaselineD+0.5
Partisan leanR+1.3
National environmentD+3.3
Incumbency0.0
Incumbent's last over/under-performance0.0
Fundraising gapD+0.9
Fundamentals estimateD+3.3
Input: partisan lean
R+1.7
Presidential vote relative to the nation, 2024 (and 2020).
Input: raised from itemized individual donors, through June 30
$6.6M D · $4.0M R
FEC filings; the model uses the log of the ratio.
Handicappers, for comparison
Cook: Lean D · Sabato: Lean D · Inside Elections: Tilt D
Not an input to the projection.
Table view

All 30 polls in the average

“Share” is how much of today’s average each poll supplies. It depends on recency, the pollster’s record, whether the poll screens for likely voters, and how many other polls the same firm has in the race. It does not depend on sample size.

DatesPollsterSampleCooperWhatleyAs publishedAdjustedShare of average
Sep 16–17InsiderAdvantage1,200 LV48.442.5D+6D+5.8
moved 0.1 toward R
13%
source
Sep 13–15Harper Polling
for Carolina Journal
608 LV49.234.1D+15D+14.7
moved 0.4 toward R
12%
source
Sep 8–10Trafalgar GroupREP.-ALIGNED1,084 LV48.242.3D+6D+9.0
moved 3.1 toward D
11%
source
Aug 31 – Sep 3East Carolina University Center for Survey Research675 LV51.743.6D+8D+8.1
11%
source
Aug 21–31YouGov
for Elon University
565 LV4938D+11D+10.5
moved 0.5 toward R
9.7%
source
Aug 3–12High Point University Survey Research Center660 LV5045D+5D+5.1
moved 0.1 toward D
7.4%
source
Aug 9–10Harper Polling
for Carolina Journal
600 LV51.539D+13D+12.1
moved 0.4 toward R
3.7%
source
Aug 3–6Change ResearchDEM.-ALIGNED
for Carolina Forward
915 LV50.142.9D+7D+4.0
moved 3.1 toward R
6.5%
source
Jul 29 – Aug 1Change ResearchDEM.-ALIGNED
for Gary Pearce | Sam Hunt
967 RV5041D+9D+5.9
moved 3.1 toward R
1.8%
source
Jul 23–31YouGov
for Elon University
466 LV5342D+11D+10.5
moved 0.5 toward R
3.3%
source
Jul 23–27Beacon Research/Shaw & Co. Research
for Fox News
1,005 RV5344D+9D+9.1
moved 0.1 toward D
4.4%
source
Jul 21–23YouGov466 LV5342D+11D+10.5
moved 0.5 toward R
1.5%
source
Jul 10–11Public Policy Polling759 RV4844D+4D+4.2
moved 0.2 toward D
3.7%
source
Jun 15–27The New York Times/Siena College601 LV5043.2D+7D+7.4
moved 0.6 toward D
4.8%
source
Jun 1–10YouGov
for Catawba College Center for N.C. Politics & Public Service
905 LV47.734D+14D+13.2
moved 0.5 toward R
0.4%
source
May 10–11Harper Polling
for Carolina Journal
600 LV49.838.7D+11D+10.7
moved 0.4 toward R
0.6%
source
May 4–8Change ResearchDEM.-ALIGNED
for Carolina Forward
957 LV49.342.4D+7D+3.7
moved 3.1 toward R
0.5%
source
Apr 21–24Opinion Diagnostics830 RV50.441.4D+9D+9.1
moved 0.1 toward D
1.3%
source
Mar 26 – Apr 6High Point University Survey Research Center703 LV5042D+8D+8.1
moved 0.1 toward D
0.8%
source
Mar 31 – Apr 1Quantus Insights987 LV48.643.8D+5D+5.1
moved 0.3 toward D
1.5%
source
Mar 22–23Harper Polling
for Carolina Journal
600 LV48.941.1D+8D+7.4
moved 0.4 toward R
0.2%
source
Mar 9–18YouGov
for Catawba College Center for N.C. Politics & Public Service
872 LV4834D+14D+13.5
moved 0.5 toward R
0.1%
source
Mar 13–14Public Policy Polling556 RV4744D+3D+3.2
moved 0.2 toward D
0.4%
source
Mar 8–9Nexus Strategies/Strategic Partners Solutions
for Healthier United
800 RV5032D+18D+18.0
0.7%
source
Jan 31 – Feb 4Change ResearchDEM.-ALIGNED
for Gary Pearce | Sam Hunt
1,069 RV5040D+10D+6.9
moved 3.1 toward R
0.1%
source
Jan 12–15TIPP InsightsREP.-ALIGNED
for League of American Workers
1,512 RV48.424.2D+24D+27.0
moved 2.8 toward D
0.4%
source
Jan 5–7Change ResearchDEM.-ALIGNED
for Carolina Forward
1,105 LV4742D+5D+1.9
moved 3.1 toward R
0.0%
source
Nov 9–10 ’25Harper Polling
for Carolina Journal
600 LV47.338.6D+9D+8.3
moved 0.4 toward R
0.0%
source
Sep 14–15 ’25Harper Polling
for Carolina Journal
600 LV46.141.9D+4D+3.8
moved 0.4 toward R
0.0%
source
Sep 2–8 ’25Change ResearchDEM.-ALIGNED
for Carolina Forward
855 LV4841D+7D+3.9
moved 3.1 toward R
0.0%
source

LV: likely voters. RV: registered voters. A: all adults. “Adjusted” is the published margin after removing the sponsor shift and the pollster’s measured house effect; the small print says how far that moved the poll. Dem.-aligned and Rep.-aligned mark polls paid for by a party, a campaign, or an allied group, or taken by a firm whose published work is mostly for one side. They are shifted by the average lean of such polls, then counted at full weight.

History

Recent results for this office

YearDemocratRepublicanResult
2022Cheri BeasleyTed BuddR+3.2
2020Cal CunninghamThomas Roland TillisR+1.7
2016Deborah K. RossRichard BurrR+5.7
2014Kay R. HaganThomas Roland TillisR+1.6