- Lead
- 19,058
- Total
- 73,928
- vs nation
- D+27.3
Maryland 9th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 20,782
- Total
- 74,258
- vs nation
- D+23.5
- Lead
- 9,106
- Total
- 60,410
- vs nation
- D+13.0
- Lead
- 54
- Total
- 60,572
- vs nation
- R+3.8
- Lead
- 72
- Total
- 57,542
- vs nation
- R+7.4
- Lead
- 7,181
- Total
- 55,012
- vs nation
- R+10.6
- Lead
- 6,762
- Total
- 46,894
- vs nation
- R+14.9
- Lead
- 6,001
- Total
- 40,087
- vs nation
- R+23.5
Key facts
- 2024 presidential margin
- D+25.8MIT Election Lab
- Population
- 130,2372024 5-year
- Population density
- 694 / sq mi2024 5-year · TIGER/Line
- Land area
- 188 sq miTIGER/Line
- Median household income
- $178,0772024 5-year
- White (non-Hispanic)
- 53.7%2024 5-year
- Black
- 8.6%2024 5-year
- Hispanic / Latino
- 5.9%2024 5-year
- Peak Democratic margin
- D+28.0 in 2020MIT Election Lab
- Peak Republican margin
- R+51.4 in 1956MIT Election Lab
- Most similar
- State Senate District 38, VA · twin score 93.9
presidential history
Party record book
Maryland 9th State Senate District · 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
62.5%
46,392 votes · D+28.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 60.5%
Republican
Dwight D. Eisenhower1956
75.7%
4,477 votes · R+51.4 · modeled estimate
Runner-up · Richard Nixon, 1972 · 74.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
46,392votes
62.5% of the vote · D+28.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 44,747 votes
Republican
George W. Bush2004
30,723votes
55.8% of the vote · R+13.1 · modeled estimate
Runner-up · Mitt Romney, 2012 · 29,492 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
+27.3pts D vs U.S.
Place D+25.8 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +23.5 pts
Republican
Thomas E. Dewey1948
+41.2pts R vs U.S.
Place R+36.7 · U.S. D+4.5 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +40.3 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.
District 9 sits well to the right of Maryland's statewide lean, posting a double-digit Republican presidential margin in 2024 — an unusual profile in a state that voted Democratic by roughly 30 points overall.
Across the recorded series it reached a Democratic high of 28.0 points in 2020 and a Republican high of 51.4 points in 1956. Between 2020 and 2024 the district moved 2.2 points toward the Republican candidate; the 2024 margin was 25.8 points.
A population of 130,237, a 54% non-Hispanic-white share, and a median household income of $178,077 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 38 and Legislative (Senate) District 41.
The state-senate 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 9th State Senate District. Akashic. https://akashic.app/sld-upper/24009/. Accessed May 20, 2026. License: CC BY 4.0.