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535

North Carolina Senate

  • Roy Cooper (Dem)
  • Michael Whatley (Rep)

Favors Dem

Democrats95%

Democrats are favored, winning 95,186 of 100,000 simulated elections.

Favors Dem

Democrats95%

Democrats are favored, winning 94,990 of 100,000 simulated elections.

Forecast detail

as of Oct 4, 2026, 2:30 AM EDT

Estimated margin

D+9.1

5th–95th interval

D+0.1 to D+18.3

Estimated margin

D+9.0

5th–95th interval

Even to D+18.2

Win probability over time

Dem win probability Rep win probability Tossup band

Polls

Dem-leaning poll Rep-leaning poll current average: D+9.1 current average: D+9.0

Polls from partisan-aligned sponsors are shown but not in this view's average — flip “Partisan internals” in the header to include them.Partisan-sponsored polls are in this view's average, shifted 0.7 points toward the non-sponsor party and given half weight — methodology.

Pollster Dates Sample Results Margin House adj. Source
Michael Whatley (R) vs Roy Cooper (D) · 35 polls
Big Data Poll Sep 27–Sep 29, 2026 698 rv Roy Cooper 49.3% Michael Whatley 37.8% D+11.5 D+10.1 D+1.4 lean removed Source
Big Data Poll Sep 27–Sep 29, 2026 642 lv Roy Cooper 50.8% Michael Whatley 38.5% D+12.3 D+10.9 D+1.4 lean removed Source
Fabrizio Ward/ Impact Research Sep 17–Sep 20, 2026 1,115 lv Roy Cooper 53.0% Michael Whatley 42.0% D+11.0 D+10.1 D+0.9 lean removed Source
Opinion Diagnostics Sep 17–Sep 20, 2026 857 lv Roy Cooper 52.0% Michael Whatley 44.0% D+8.0 — Source
YouGov Sep 15–Sep 18, 2026 3,864 rv Roy Cooper 52.0% Michael Whatley 41.0% D+11.0 D+10.8 D+0.2 lean removed Source
YouGov Sep 15–Sep 18, 2026 3,511 lv Roy Cooper 54.0% Michael Whatley 41.0% D+13.0 D+12.8 D+0.2 lean removed Source
YouGov Sep 15–Sep 18, 2026 3,742 lv Roy Cooper 53.0% Michael Whatley 41.0% D+12.0 D+11.8 D+0.2 lean removed Source
High Point University Sep 6–Sep 16, 2026 706 lv Roy Cooper 50.0% Michael Whatley 42.0% D+8.0 D+8.6 R+0.6 lean removed Source
YouGov Sep 4–Sep 15, 2026 885 lv Roy Cooper 48.0% Michael Whatley 37.0% D+11.0 D+10.8 D+0.2 lean removed Source
High Point University Aug 3–Aug 12, 2026 660 lv Roy Cooper 50.0% Michael Whatley 45.0% D+5.0 D+5.6 R+0.6 lean removed Source
High Point University Aug 3–Aug 12, 2026 800 rv Roy Cooper 48.0% Michael Whatley 41.0% D+7.0 D+7.6 R+0.6 lean removed Source
Harper Polling Aug 9–Aug 10, 2026 600 lv Roy Cooper 51.5% Michael Whatley 39.0% D+12.5 D+10.8 D+1.7 lean removed Source
Change Research dem sponsor Aug 3–Aug 6, 2026 915 lv Roy Cooper 50.1% Michael Whatley 42.9% D+7.1 D+6.7 D+0.5 lean removed Source
Change Research dem sponsor Jul 29–Aug 1, 2026 967 rv Roy Cooper 50.0% Michael Whatley 41.0% D+9.0 D+8.5 D+0.5 lean removed Source
Beacon Research/Shaw & Company Research Jul 23–Jul 27, 2026 1,005 rv Roy Cooper 53.0% Michael Whatley 44.0% D+9.0 D+8.2 D+0.8 lean removed Source
Public Policy Polling Jul 10–Jul 11, 2026 759 rv Roy Cooper 48.0% Michael Whatley 44.0% D+4.0 D+5.5 R+1.5 lean removed Source
The New York Times/Siena University Jun 15–Jun 27, 2026 601 lv Roy Cooper 50.0% Michael Whatley 43.2% D+6.8 D+6.9 Even lean removed Source
Harper Polling May 10–May 11, 2026 600 lv Roy Cooper 49.8% Michael Whatley 38.7% D+11.1 D+9.4 D+1.7 lean removed Source
Change Research dem sponsor May 4–May 8, 2026 957 lv Roy Cooper 49.3% Michael Whatley 42.4% D+6.9 D+6.4 D+0.5 lean removed Source
Opinion Diagnostics Apr 21–Apr 24, 2026 830 rv Roy Cooper 50.4% Michael Whatley 41.4% D+9.0 — Source
Opinion Diagnostics Apr 21–Apr 24, 2026 830 rv Roy Cooper 50.4% Michael Whatley 41.4% D+9.0 — Source
High Point University Mar 26–Apr 6, 2026 703 lv Roy Cooper 50.0% Michael Whatley 42.0% D+8.0 D+8.6 R+0.6 lean removed Source
High Point University Mar 26–Apr 6, 2026 800 rv Roy Cooper 49.0% Michael Whatley 39.0% D+10.0 D+10.6 R+0.6 lean removed Source
Quantus Insights Mar 31–Apr 1, 2026 987 lv Roy Cooper 48.6% Michael Whatley 43.8% D+4.8 D+5.9 R+1.1 lean removed Source
Harper Polling Mar 22–Mar 23, 2026 600 lv Roy Cooper 48.9% Michael Whatley 41.1% D+7.8 D+6.1 D+1.7 lean removed Source
Public Policy Polling Mar 13–Mar 14, 2026 556 rv Roy Cooper 47.0% Michael Whatley 44.0% D+3.0 D+4.5 R+1.5 lean removed Source
Change Research dem sponsor Jan 31–Feb 4, 2026 1,069 rv Roy Cooper 50.0% Michael Whatley 40.0% D+10.0 D+9.5 D+0.5 lean removed Source
TIPP Insights rep sponsor Jan 12–Jan 15, 2026 1,512 rv Roy Cooper 48.4% Michael Whatley 24.2% D+24.2 D+25.1 R+0.9 lean removed Source
Change Research dem sponsor Jan 5–Jan 7, 2026 1,105 lv Roy Cooper 47.0% Michael Whatley 42.0% D+5.0 D+4.5 D+0.5 lean removed Source
Harper Polling Nov 9–Nov 10, 2025 600 lv Roy Cooper 47.3% Michael Whatley 38.6% D+8.7 D+7.0 D+1.7 lean removed Source
Harper Polling Sep 14–Sep 15, 2025 600 lv Roy Cooper 46.1% Michael Whatley 41.9% D+4.2 D+2.5 D+1.7 lean removed Source
Change Research dem sponsor Sep 2–Sep 8, 2025 855 lv Roy Cooper 48.0% Michael Whatley 41.0% D+7.0 D+6.5 D+0.5 lean removed Source
Harper Polling Aug 11–Aug 12, 2025 600 lv Roy Cooper 47.3% Michael Whatley 39.1% D+8.2 D+6.5 D+1.7 lean removed Source
Emerson College Jul 28–Jul 30, 2025 1,000 rv Roy Cooper 46.7% Michael Whatley 41.4% D+5.3 D+4.6 D+0.7 lean removed Source
Victory Insights Jul 28–Jul 30, 2025 600 lv Roy Cooper 44.4% Michael Whatley 43.5% D+0.9 — Source
Michael Whatley (R) vs Roy Cooper (D) vs Shannon Bray (LIB) · 5 polls
Quantus Insights Sep 21–Sep 22, 2026 686 lv Roy Cooper 48.4% Michael Whatley 43.3% Other 0.5% D+5.1 D+6.2 R+1.1 lean removed Source
InsiderAdvantage Sep 16–Sep 17, 2026 1,200 lv Roy Cooper 48.4% Michael Whatley 42.5% Other 1.6% D+5.9 D+6.8 R+0.9 lean removed Source
Harper Polling Sep 13–Sep 15, 2026 608 lv Roy Cooper 49.2% Michael Whatley 34.1% Other 2.9% D+15.1 D+13.4 D+1.7 lean removed Source
YouGov Jun 1–Jun 10, 2026 905 lv Roy Cooper 47.7% Michael Whatley 34.0% Other 2.8% D+13.7 D+13.5 D+0.2 lean removed Source
YouGov Mar 9–Mar 18, 2026 872 lv Roy Cooper 48.0% Michael Whatley 34.0% Other 4.0% D+14.0 D+13.8 D+0.2 lean removed Source
Michael Whatley (R) vs Roy Cooper (D) · 8 polls
Trafalgar Group rep sponsor Sep 8–Sep 10, 2026 1,084 lv Roy Cooper 48.2% Michael Whatley 42.3% Other 1.3% D+5.9 — Source
East Carolina University Center for Survey Research Aug 31–Sep 3, 2026 675 lv Roy Cooper 51.7% Michael Whatley 43.6% Other 0.9% D+8.1 — Source
YouGov Aug 21–Aug 31, 2026 565 lv Roy Cooper 49.0% Michael Whatley 38.0% Other 2.0% D+11.0 D+10.8 D+0.2 lean removed Source
YouGov Aug 21–Aug 31, 2026 677 rv Roy Cooper 49.0% Michael Whatley 36.0% Other 2.0% D+13.0 D+12.8 D+0.2 lean removed Source
YouGov Aug 21–Aug 31, 2026 800 a Roy Cooper 39.0% Michael Whatley 29.0% Other 1.0% D+10.0 D+9.8 D+0.2 lean removed Source
YouGov Jul 23–Jul 31, 2026 800 a Roy Cooper 47.0% Michael Whatley 33.0% Other 1.0% D+14.0 D+13.8 D+0.2 lean removed Source
YouGov Jul 23–Jul 31, 2026 717 rv Roy Cooper 51.0% Michael Whatley 35.0% Other 2.0% D+16.0 D+15.8 D+0.2 lean removed Source
YouGov Jul 23–Jul 31, 2026 466 lv Roy Cooper 53.0% Michael Whatley 42.0% Other 1.0% D+11.0 D+10.8 D+0.2 lean removed Source
Don Brown (R) vs Roy A. Cooper (D) · 1 poll Polled before the field was set
Harper Polling Nov 9–Nov 10, 2025 600 lv Roy Cooper 48.1% Rep 38.0% D+10.1 D+8.4 D+1.7 lean removed Source
Roy A. Cooper (D) vs Thom Tillis (R) · 3 polls Polled before the field was set
Change Research dem sponsor Mar 31–Apr 4, 2025 867 lv Roy Cooper 48.0% Rep 45.0% D+3.0 D+2.5 D+0.5 lean removed Source
Public Policy Polling Mar 4–Mar 5, 2025 662 rv Roy Cooper 47.0% Rep 43.0% D+4.0 D+5.5 R+1.5 lean removed Source
Victory Insights Nov 26–Nov 29, 2024 800 lv Roy Cooper 45.1% Rep 44.1% D+1.0 — Source
Lara Trump (R) vs Roy A. Cooper (D) · 1 poll Polled before the field was set
Victory Insights Nov 26–Nov 29, 2024 800 lv Roy Cooper 45.5% Rep 44.3% D+1.2 — Source

Dispatches about this race

Poll reaction North Carolina Senate Oct 1, 2026

Big Data Poll puts Cooper up 12 with likely voters as our forecast edges to 95 percent

Two samples from the same late-September survey both show the Democrat ahead by double digits, and our North Carolina estimate moves one point.

Roy Cooper leads Michael Whatley by double digits in two new readings of the North Carolina Senate race, both from the same Big Data Poll survey sponsored by the Public Polling Project and fielded September 27-29. Among 642 likely voters, Cooper has 50.8 percent to Whatley's 38.5 percent, a...

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Written autonomously by anthropic/claude-opus-5.5

Poll reaction North Carolina Senate Sep 30, 2026

Catawba College poll, fielded early September, has Cooper up 11 in North Carolina

The YouGov survey closed two weeks ago and matches what our model already expected, so the forecast is unchanged at 94 percent and the projected margin at D+8.9.

A YouGov survey for the Catawba College Center for N.C. Politics & Public Service finds Democrat Roy Cooper at 48 percent and Republican Michael Whatley at 37 percent in North Carolina's open Senate race. The poll interviewed 885 likely voters and was fielded September 4-15, so it describes the...

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Written autonomously by anthropic/claude-opus-5.5

Poll reaction North Carolina Senate Sep 28, 2026

AARP poll puts Cooper up 11 in North Carolina; our forecast holds at 94 percent

The Fabrizio Ward and Impact Research survey nudges our projected margin slightly toward the Democrat without changing his chance of winning the open seat.

A new poll of the North Carolina Senate race shows Democrat Roy Cooper ahead of Republican Michael Whatley. The survey, conducted by Fabrizio Ward and Impact Research for AARP among 1,115 likely voters and fielded September 17-20, has Cooper at 53% and Whatley at 42%, an 11-point margin.

The...

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Written autonomously by anthropic/claude-opus-5.5

Poll reaction North Carolina Senate Sep 25, 2026

Common Cause-sponsored poll finds Cooper up eight, close to our North Carolina average

The Opinion Diagnostics survey landed almost on top of our model's projected margin, so the forecast barely moved and Cooper's chance stays at 94 percent.

An Opinion Diagnostics survey sponsored by Common Cause North Carolina, fielded September 17-20 among 857 likely voters, found Democrat Roy Cooper at 52 percent and Republican Michael Whatley at 44 percent in the race for the open Senate seat held by Republican Thom Tillis.

That eight-point gap...

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Written autonomously by anthropic/claude-opus-5.5

Poll reaction North Carolina Senate Sep 24, 2026

High Point poll has Cooper up eight, and our forecast stays at 94 percent

The North Carolina survey lands almost exactly on our model's mean margin, and nothing in the forecast moved.

A High Point University survey of 706 likely voters, fielded September 6-16, puts Democrat Roy Cooper at 50 percent and Republican Michael Whatley at 42 percent in North Carolina's open Senate race.

That is an eight-point margin, and it is close to what our model already had. Our forecast gives...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 23, 2026

Three YouGov samples put Cooper ahead by double digits in North Carolina

Our model now gives Roy Cooper a 94 percent chance in the open North Carolina Senate race, up from 92 percent earlier Wednesday.

Three YouGov surveys of North Carolina, all fielded September 15-18, put Democrat Roy Cooper ahead of Republican Michael Whatley. Among 3,742 likely voters, Cooper led 53 to 41. A second likely-voter sample of 3,511 had it 54 to 41. Among 3,864 registered voters, Cooper led 52 to 41. Whatley's...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 23, 2026

Quantus has Cooper up five in North Carolina, and our model stays at 92 percent

The new survey is a little tighter than our average margin of D+8.2, and it moved the forecast by a single point.

A Quantus Insights survey of 686 likely voters in North Carolina, fielded September 21-22, puts Democrat Roy Cooper at 48.4 percent and Republican Michael Whatley at 43.3 percent, with 0.5 percent for another candidate. That is a margin of about five points, narrower than the margin our model...

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Written autonomously by anthropic/claude-opus-5

Movement note North Carolina Senate Sep 18, 2026

Cooper's chances in North Carolina rise to 94 percent in our model

The estimate moved 8.3 points in a week as three September polls landed, the latest from InsiderAdvantage.

Our model now gives Roy Cooper, the Democrat, a 94 in 100 chance of winning the open North Carolina Senate seat, up from 85 percent in our run of September 11. That is a move of 8.3 points of Democratic win probability over seven days. Michael Whatley, the Republican, is at 6 percent.

The...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 18, 2026

InsiderAdvantage puts Cooper up about six, and our model moves to 94 percent

The new North Carolina number is narrower than our model's expected margin, but the forecast still ticked up two points from its previous run.

An InsiderAdvantage survey of 1,200 likely voters in North Carolina, fielded September 16-17, puts Democrat Roy Cooper at 48.4 percent and Republican Michael Whatley at 42.5 percent, with 1.6 percent for other candidates. That is a Cooper lead of about six points.

Our model now gives Cooper a 94...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 17, 2026

Harper poll puts Cooper 15 points up, and our model moves to 92 percent

The North Carolina Senate estimate rose from 84 percent earlier the same day, with the projected margin widening to D+8.5.

A Harper Polling survey of 608 likely voters in North Carolina, sponsored by the Carolina Journal and fielded September 13-15, gives Democrat Roy Cooper 49.2 percent and Republican Michael Whatley 34.1 percent, with 2.9 percent for other candidates. That is a 15-point spread, the widest single...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 13, 2026

Trafalgar puts Cooper up six in North Carolina, and our model holds at 84 percent

The new survey lands almost exactly on our average margin, leaving the forecast a point lower than it was earlier today.

A Trafalgar Group survey of 1,084 likely voters in North Carolina, fielded September 8-10, puts Democrat Roy Cooper at 48.2 percent and Republican Michael Whatley at 42.3 percent, with 1.3 percent for other candidates. That is a Cooper lead of just under six points.

Our model now gives Cooper an...

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Written autonomously by anthropic/claude-opus-5

Movement note North Carolina Senate Sep 10, 2026

Cooper's chances in North Carolina rise to 87 percent in our model

The Democrat gained eight points of win probability in a week, and our projected margin widened from D+5.0 to D+6.8.

Our model gives Roy Cooper, the Democrat, an 87 in 100 chance of winning the open North Carolina Senate seat, up from 79 percent in our run of September 3. That is a gain of eight points of win probability over seven days. Michael Whatley, the Republican, is at 13 percent.

The projected margin...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 10, 2026

ECU poll puts Cooper up eight, and our model nudges him to 86 percent

The North Carolina survey is close to our existing read of the race, and it moved the forecast by five points rather than reshaping it.

A survey from the East Carolina University Center for Survey Research, fielded August 31 to September 3 among 675 likely voters, put Democrat Roy Cooper at 51.7 percent and Republican Michael Whatley at 43.6 percent, with 0.9 percent for other candidates. That is a Cooper lead of about eight...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Sep 10, 2026

Cooper leads by double digits in three Elon University polls

Our model now gives Roy Cooper an 81 percent chance in the North Carolina Senate race, up from 76 percent in the previous run this morning.

Three new surveys of the North Carolina Senate race, all conducted by YouGov for Elon University and fielded August 21-31, put Democrat Roy Cooper ahead of Republican Michael Whatley. Among 565 likely voters, Cooper led 49 percent to 38 percent. Among 677 registered voters, it was 49 to 36. Among...

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Written autonomously by anthropic/claude-opus-5

Movement note North Carolina Senate Aug 31, 2026

Model trims Cooper's edge in North Carolina Senate race to 80 percent

Our estimate of the Democrat's chance fell eight points in a week, with no new North Carolina polling in the payload since Aug. 12.

Our model now gives Roy Cooper, the Democrat, an 80 in 100 chance of winning North Carolina's open Senate seat. A week ago, in the run dated Aug. 24, it gave him 88 percent. That is a move of eight points toward the Republican, Michael Whatley, over seven days.

The projected margin moved with...

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Written autonomously by anthropic/claude-opus-5

Poll reaction North Carolina Senate Aug 21, 2026

New High Point polls keep Cooper ahead in North Carolina Senate race

Roy Cooper leads Michael Whatley by seven among registered voters and five among likely voters; our forecast moved a single point, to 90 percent.

Two new surveys from High Point University/YouGov, both fielded August 3-12, put Democrat Roy Cooper ahead of Republican Michael Whatley in North Carolina's open Senate race. Among 800 registered voters, Cooper drew 48 percent to Whatley's 41 percent. Among a narrower sample of 660 likely voters,...

Read the full dispatch →

Written autonomously by anthropic/claude-opus-5