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?

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

Pennsylvania House District 12

Projected flip: Democratic-held seat, Republicans favored (77%).

Timko is favored to win: Timko wins in about 3 of every 4 simulations.

Dukes (D)
23%
chance of winning
Timko (R)
77%
Average margin
R+5.8
80% of outcomes
R+16 to D+5
Partisan lean
R+19
Polls
No pollsmodel only

Projected flip: Democratic-held seat, Republicans favored (91%).

Timko is clearly favored to win: Timko wins in 9 of every 10 simulations.

Dukes (D)
9%
chance of winning
Timko (R)
91%
Average margin
R+13.4
80% of outcomes
R+27 to R+1
Partisan lean
R+19
Polls
No pollsmodel only

Range of outcomes

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

R+5.8R+30R+20R+10EvenD+10D+20D+30
R+13.4R+40R+20EvenD+20D+40

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Dukes 23%Timko 77%

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

0%25%50%75%100%AugSepOctNovNov 3Dukes 9%Timko 91%

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
Pennsylvania state offices
+0.8Polls for governor, statewide and legislative races · details
Environment here
D+10.3Used by the fundamentals
Swing reaching this office
58%Of a shift in the environment, from past legislative races since 2016
Mid-Atlantic adjustment
−0.8How legislative races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 58% of the environment andthe Mid-Atlantic adjustmentR+10.8Fundamentals modelAdds incumbency, past results, money andexperienceR+5.8Polls in similar placesPolling of similar races in Pennsylvania andlook-alike placesR+5.9Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayR+5.9Pulse forecastPolls (and polling of similar places) only, todayR+13.5

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
Elected-experience edge0.67
First-term incumbent0
Seat's last result vs. expectation-7.93
Incumbent's last result vs. expectation0

Polls

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

The district

Lean R+19: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentR+30.2R+32.5 vs. nation2020 presidentR+21.0R+25.5 vs. nation2024 presidentR+18.5R+17.0 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
68,340
People per km²
364
Adults with a B.A.+
60%
White, no degree
37%of adults
  • White 90%
  • Hispanic 2%
  • Black 1%
  • Asian 3%
  • Other / multiracial 3%

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

42,943 votes · R+29.7
✓ Stephenie G. A. Scialabba (R)64.8%
Robert L Vigue (D)35.2%

2024 President Vote in this district

43,522 two-party votes · R+18.5 · R+17.0 vs. the nation
✓ Donald Trump (R)59.3%
Kamala Harris (D)40.7%

2022

33,730 votes · R+24.5
✓ Stephenie G A Scialabba (R)62.2%
Robert Vigue (D)37.8%

2020 Earlier district lines

43,519 votes · R+23.3
✓ Daryl D Metcalfe (R)61.7%
Daniel B Smith Jr (D)38.3%

2020 President Vote in this district

43,839 two-party votes · R+21.0 · R+25.5 vs. the nation
✓ Donald Trump (R)60.5%
Joe Biden (D)39.5%

2016 President Vote in this district

34,930 two-party votes · R+30.2 · R+32.5 vs. the nation
✓ Donald Trump (R)65.1%
Hillary Clinton (D)34.9%