- Lead
- 4,243
- Total
- 30,658
- vs nation
- D+15.3
Virginia 20th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 8,049
- Total
- 32,449
- vs nation
- D+20.3
- Lead
- 5,492
- Total
- 29,464
- vs nation
- D+16.5
- Lead
- 4,181
- Total
- 27,927
- vs nation
- D+11.1
- Lead
- 3,264
- Total
- 25,035
- vs nation
- D+5.8
- Lead
- 2,618
- Total
- 22,191
- vs nation
- R+9.3
- Lead
- 2,438
- Total
- 19,523
- vs nation
- R+13.0
- Lead
- 1,974
- Total
- 16,321
- vs nation
- R+20.6
Key facts
- 2024 presidential margin
- D+13.8MIT Election Lab
- Population
- 85,5552024 5-year
- Population density
- 4,456 / sq mi2024 5-year · TIGER/Line
- Land area
- 19.2 sq miTIGER/Line
- Median household income
- $107,6612024 5-year
- White (non-Hispanic)
- 31.4%2024 5-year
- Black
- 11.3%2024 5-year
- Hispanic / Latino
- 44.3%2024 5-year
- Peak Democratic margin
- D+82.4 in 1912MIT Election Lab
- Peak Republican margin
- R+48.5 in 1972MIT Election Lab
- Most similar
- Assembly District 6, NY · twin score 82.9
presidential history
Party record book
Virginia 20th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
2004–2024 · 6 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Joe Biden2020
61.4%
19,928 votes · D+24.8 · modeled estimate
Runner-up · Barack Obama, 2012 · 56.7%
Republican
George W. Bush2004
55.6%
12,329 votes · R+11.8 · modeled estimate
Runner-up · John McCain, 2008 · 43.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
19,928votes
61.4% of the vote · D+24.8 · modeled estimate
Runner-up · Kamala Harris, 2024 · 17,123 votes
Republican
Donald Trump2024
12,880votes
42.0% of the vote · D+13.8 · modeled estimate
Runner-up · George W. Bush, 2004 · 12,329 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
Joe Biden2020
+20.3pts D vs U.S.
Place D+24.8 · U.S. D+4.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · +16.5 pts
Republican
George W. Bush2004
+9.3pts R vs U.S.
Place R+11.8 · U.S. R+2.5 · modeled estimate
Runner-up · John McCain, 2008 · −5.8 pts
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.
Situated in the Northern Virginia suburbs, this district has trended solidly toward Democratic candidates in recent cycles, with a 2024 presidential margin of D+13.7 reflecting the region's highly educated, diverse, and rapidly growing electorate.
Across the recorded series it reached a Democratic high of 82.4 points in 1912 and a Republican high of 48.5 points in 1972. Between 2020 and 2024 the district moved 11.0 points toward the Republican candidate; the 2024 margin was 13.8 points.
A population of 85,555, a 31% non-Hispanic-white share, and a median household income of $107,661 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 6 and State House District 26.
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 →
Virginia 20th State House District. Akashic. https://akashic.app/sld-lower/51020/. Accessed May 20, 2026. License: CC BY 4.0.