- Lead
- 9,352
- Total
- 49,887
- vs nation
- D+20.2
Maryland State Legislative Subdistrict 9A
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 10,666
- Total
- 50,683
- vs nation
- D+16.6
- Lead
- 2,870
- Total
- 42,742
- vs nation
- D+4.6
- Lead
- 3,793
- Total
- 43,564
- vs nation
- R+12.6
- Lead
- 3,702
- Total
- 41,404
- vs nation
- R+16.2
- Lead
- 8,692
- Total
- 40,164
- vs nation
- R+19.2
- Lead
- 7,824
- Total
- 34,365
- vs nation
- R+23.3
- Lead
- 6,812
- Total
- 29,463
- vs nation
- R+31.6
Key facts
- 2024 presidential margin
- D+18.7MIT Election Lab
- Population
- 85,5492024 5-year
- Population density
- 510 / sq mi2024 5-year · TIGER/Line
- Land area
- 168 sq miTIGER/Line
- Median household income
- $190,3552024 5-year
- White (non-Hispanic)
- 57.2%2024 5-year
- Black
- 7.7%2024 5-year
- Hispanic / Latino
- 6.4%2024 5-year
- Peak Democratic margin
- D+21.0 in 2020MIT Election Lab
- Peak Republican margin
- R+56.9 in 1956MIT Election Lab
- Most similar
- State House District 15, VA · twin score 94.4
presidential history
Party record book
Maryland State Legislative Subdistrict 9A · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Joe Biden2020
59.0%
29,881 votes · D+21.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 57.1%
Republican
Dwight D. Eisenhower1956
78.4%
3,761 votes · R+56.9 · modeled estimate
Runner-up · Richard Nixon, 1972 · 77.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
29,881votes
59.0% of the vote · D+21.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 28,478 votes
Republican
George W. Bush2004
24,162votes
60.2% of the vote · R+21.6 · modeled estimate
Runner-up · Mitt Romney, 2012 · 23,136 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
+20.2pts D vs U.S.
Place D+18.7 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +16.6 pts
Republican
Thomas E. Dewey1948
+50.0pts R vs U.S.
Place R+45.5 · U.S. D+4.5 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +49.6 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.
Maryland State Legislative Subdistrict 9A sits in the Mid-Atlantic. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 21.0 points in 2020 and a Republican high of 56.9 points in 1956. Between 2020 and 2024 the district moved 2.3 points toward the Republican candidate; the 2024 margin was 18.7 points.
A population of 85,549, a 57% non-Hispanic-white share, and a median household income of $190,355 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 15 and State House District 10.
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 →
Maryland State Legislative Subdistrict 9A. Akashic. https://akashic.app/sld-lower/2409A/. Accessed May 20, 2026. License: CC BY 4.0.