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?

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

Oregon House District 41

Fusion

Gamba is very likely to win: Gamba wins in more than 99 of every 100 simulations.

Gamba (D)
>99%
chance of winning
Clark (R)
<1%
Average margin
D+58.0
80% of outcomes
D+49 to D+68
Partisan lean
D+62
Polls
No pollsmodel only

Gamba is very likely to win: Gamba wins in more than 99 of every 100 simulations.

Gamba (D)
>99%
chance of winning
Clark (R)
<1%
Average margin
D+62.2
80% of outcomes
D+50 to D+75
Partisan lean
D+62
Polls
No pollsmodel only

How this race is decided

Cross-party nominations

A candidate can be nominated by several parties, such as Working Families or the Independent Party, and the ballot lists all of them next to one name. The forecast counts the candidate's votes once, under their main party.

Two-thirds quorum

Each chamber needs two-thirds of its members present to do business, so a minority holding more than a third of seats can block votes by walking out. Members with ten unexcused absences in a session cannot run for re-election (Measure 113).

Range of outcomes

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

D+58.0R+75R+50R+25EvenD+25D+50D+75
D+62.2R+75R+50R+25EvenD+25D+50D+75

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Gamba >99%Clark <1%

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

0%25%50%75%100%AugSepOctNovNov 3Gamba >99%Clark <1%

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
Oregon state offices
−2.8Polls for governor, statewide and legislative races · details
Environment here
D+6.7Used by the fundamentals
Swing reaching this office
58%Of a shift in the environment, from past legislative races since 2016
Pacific adjustment
−1.7How legislative races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 58% of the environment andthe Pacific adjustmentD+59.8Fundamentals modelAdds incumbency, past results, money andexperienceD+59.3Polls in similar placesPolling of similar races in Oregon and look-alikeplacesD+57.0Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayD+58.0Pulse forecastPolls (and polling of similar places) only, todayD+62.1

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)2.06
Elected-experience edge0.67
First-term incumbent0
Seat's last result vs. expectation0.86
Incumbent's last result vs. expectation0.86

Polls

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

The district

Lean D+62: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentD+52.7D+50.5 vs. nation2020 presidentD+58.6D+54.1 vs. nation2024 presidentD+62.7D+64.2 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
73,371
People per km²
1,792
Adults with a B.A.+
54%
White, no degree
36%of adults
  • White 78%
  • Hispanic 9%
  • Black 2%
  • Asian 4%
  • Other / multiracial 7%

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

40,551 votes · D+60.0
✓ Mark F Gamba (D)79.9%
Elvis Clark (R)20.0%

2024 President Vote in this district

42,203 two-party votes · D+62.7 · D+64.2 vs. the nation
✓ Kamala Harris (D)81.4%
Donald Trump (R)18.6%

2022

37,318 votes · D+56.6
✓ Mark F Gamba (D)78.2%
Rob Reynolds (R)21.7%

2020 Earlier district lines

41,665 votes · D+47.7
✓ Karin Power (D)73.7%
Michael Newgard (R)26.1%

2020 President Vote in this district

46,944 two-party votes · D+58.6 · D+54.1 vs. the nation
✓ Joe Biden (D)79.3%
Donald Trump (R)20.7%

2016 President Vote in this district

41,399 two-party votes · D+52.7 · D+50.5 vs. the nation
✓ Hillary Clinton (D)76.4%
Donald Trump (R)23.6%