Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

North Carolina › North Carolina House of Representatives · State legislature · November 3, 2026 · Updated Oct 16, 2026

North Carolina House District 105

Projected flip: Republican-held seat, Democrats favored (78%).

McCool is favored to win: McCool wins in about 4 of every 5 simulations.

McCool (D)
78%
chance of winning
Cotham (R)
22%
Average margin
D+5.5
80% of outcomes
R+4 to D+15
Partisan lean
Even
Polls
No pollsmodel only

Projected flip: Republican-held seat, Democrats favored (80%).

McCool is favored to win: McCool wins in 4 of every 5 simulations.

McCool (D)
80%
chance of winning
Cotham (R)
20%
Average margin
D+8.0
80% of outcomes
R+5 to D+21
Partisan lean
Even
Polls
No pollsmodel only

Range of outcomes

Final margin across our simulations; the white dashes mark the middle 80%.

D+5.5R+30R+20R+10EvenD+10D+20D+30
D+8.0R+40R+20EvenD+20D+40

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3McCool 78%Cotham 22%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

0%25%50%75%100%AugSepOctNovNov 3McCool 80%Cotham 20%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

The candidates

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast
North Carolina state offices
+0.0Polls for governor, statewide and legislative races · details
Environment here
D+9.5Used by the fundamentals
Swing reaching this office
58%Of a shift in the environment, from past legislative races since 2016
Southeast adjustment
−1.8How legislative races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 58% of the environment andthe Southeast adjustmentD+7.1Fundamentals modelAdds incumbency, past results, money andexperienceD+4.9Polls in similar placesPolling of similar races in North Carolina andlook-alike placesD+5.9Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayD+5.5Pulse forecastPolls (and polling of similar places) only, todayD+8.0

Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.

Fundamentals inputs
Incumbency (+1 D, −1 R)-1
Fundraising edge (log ratio of individual money)-0.27
Elected-experience edge-0.67
First-term incumbent0
Seat's last result vs. expectation1.95
Incumbent's last result vs. expectation1.95

Polls

No public polls of this race. The forecast relies on fundamentals and on polling of similar places in the state.

The district

Lean Even: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentR+11.4R+13.6 vs. nation2020 presidentR+1.0R+5.5 vs. nation2024 presidentD+0.6D+2.1 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
93,430
People per km²
594
Adults with a B.A.+
59%
White, no degree
29%of adults
  • White 73%
  • Hispanic 8%
  • Black 9%
  • Asian 6%
  • Other / multiracial 4%

American Community Survey 2020–2024, aggregated from census tracts.

Past results

Results in the same-numbered district; earlier elections may have used different lines.

2024

54,385 votes · R+0.4
✓ Tricia Ann Cotham (R)50.2%
Nicole Sidman (D)49.8%

2024 President Vote in this district

54,417 two-party votes · D+0.6 · D+2.1 vs. the nation
✓ Kamala Harris (D)50.3%
Donald Trump (R)49.7%

2022 Earlier district lines

30,852 votes · D+13.7
✓ Wesley Harris (D)56.9%
Joshua Niday (R)43.1%

2020 Earlier district lines

93,957 votes · D+9.6
✓ Wesley Harris (D)54.8%
Amy Bynum (R)45.2%

2020 President Vote in this district

59,227 two-party votes · R+1.0 · R+5.5 vs. the nation
✓ Donald Trump (R)50.5%
Joe Biden (D)49.5%

2016 President Vote in this district

48,127 two-party votes · R+11.4 · R+13.6 vs. the nation
✓ Donald Trump (R)55.7%
Hillary Clinton (D)44.3%