- Lead
- 9,172
- Total
- 93,986
- vs nation
- D+11.2
Washington 42nd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 9,252
- Total
- 93,887
- vs nation
- D+5.4
- Lead
- 3,278
- Total
- 77,303
- vs nation
- D+2.2
- Lead
- 335
- Total
- 71,360
- vs nation
- R+4.3
- Lead
- 2,320
- Total
- 68,821
- vs nation
- R+3.9
- Lead
- 3,684
- Total
- 62,642
- vs nation
- R+3.4
- Lead
- 7,357
- Total
- 51,718
- vs nation
- R+14.7
- Lead
- 4,558
- Total
- 44,883
- vs nation
- R+18.7
Key facts
- 2024 presidential margin
- D+9.8MIT Election Lab
- Population
- 156,9442024 5-year
- Population density
- 78 / sq mi2024 5-year · TIGER/Line
- Land area
- 2,010 sq miTIGER/Line
- Median household income
- $79,5032024 5-year
- White (non-Hispanic)
- 73.0%2024 5-year
- Black
- 1.0%2024 5-year
- Hispanic / Latino
- 11.7%2024 5-year
- Peak Democratic margin
- D+15.8 in 1964MIT Election Lab
- Peak Republican margin
- R+65.5 in 1928MIT Election Lab
- Most similar
- Legislative (House) District 10, WA · twin score 87.9
presidential history
Party record book
Washington 42nd State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Lyndon B. Johnson1964
57.6%
12,134 votes · D+15.8 · modeled estimate
Runner-up · Joe Biden, 2020 · 53.3%
Republican
Herbert Hoover1928
82.1%
11,849 votes · R+65.5 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · 75.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
50,054votes
53.3% of the vote · D+9.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 49,809 votes
Republican
Donald Trump2020
40,802votes
43.5% of the vote · D+9.9 · modeled estimate
Runner-up · Donald Trump, 2024 · 40,637 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Kamala Harris2024
+11.2pts D vs U.S.
Place D+9.8 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +5.4 pts
Republican
Herbert Hoover1928
+48.1pts R vs U.S.
Place R+65.5 · U.S. R+17.5 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +44.9 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
The 2024 presidential margin was D+9.8, one of the narrower results among Washington's state house districts, compared with D+3.4 in 2008. The district had about 219,000 residents, 78% White alone in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 15.8 points in 1964 and a Republican high of 65.5 points in 1928. The 2024 margin was 9.8 points.
A population of 156,944, a 73% non-Hispanic-white share, and a median household income of $79,503 describe the district. The district's voting pattern over the last decade is most similar to that of Legislative (House) District 10 and Legislative (House) District 3.
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Washington 42nd State House District. Akashic. https://akashic.app/sld-lower/53042/. Accessed May 20, 2026. License: CC BY 4.0.