- Lead
- 31,301
- Total
- 71,562
- vs nation
- D+45.2
Maryland 15th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 36,805
- Total
- 73,041
- vs nation
- D+45.9
- Lead
- 26,315
- Total
- 60,791
- vs nation
- D+41.2
- Lead
- 16,991
- Total
- 60,719
- vs nation
- D+24.1
- Lead
- 16,739
- Total
- 58,515
- vs nation
- D+21.3
- Lead
- 8,921
- Total
- 56,582
- vs nation
- D+18.2
- Lead
- 5,991
- Total
- 51,112
- vs nation
- D+11.2
- Lead
- 3,229
- Total
- 46,306
- vs nation
- R+1.5
Key facts
- 2024 presidential margin
- D+43.7MIT Election Lab
- Population
- 130,3552024 5-year
- Population density
- 747 / sq mi2024 5-year · TIGER/Line
- Land area
- 175 sq miTIGER/Line
- Median household income
- $171,8562024 5-year
- White (non-Hispanic)
- 44.7%2024 5-year
- Black
- 12.9%2024 5-year
- Hispanic / Latino
- 10.5%2024 5-year
- Peak Democratic margin
- D+50.4 in 2020MIT Election Lab
- Peak Republican margin
- R+42.2 in 1952MIT Election Lab
- Most similar
- State Senate District 35, VA · twin score 95.8
presidential history
Party record book
Maryland 15th 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
73.9%
54,008 votes · D+50.4 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 69.5%
Republican
Dwight D. Eisenhower1952
70.8%
8,267 votes · R+42.2 · modeled estimate
Runner-up · Thomas E. Dewey, 1948 · 68.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
54,008votes
73.9% of the vote · D+50.4 · modeled estimate
Runner-up · Kamala Harris, 2024 · 49,757 votes
Republican
George H. W. Bush1988
26,549votes
57.3% of the vote · R+15.2 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 25,309 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
+45.9pts D vs U.S.
Place D+50.4 · U.S. D+4.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · +45.2 pts
Republican
Thomas E. Dewey1948
+44.4pts R vs U.S.
Place R+39.9 · U.S. D+4.5 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +40.6 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 15th State Senate District sits in the Mid-Atlantic. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 50.4 points in 2020 and a Republican high of 42.2 points in 1952. Between 2020 and 2024 the district moved 6.6 points toward the Republican candidate; the 2024 margin was 43.7 points.
A population of 130,355, a 45% non-Hispanic-white share, and a median household income of $171,856 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 35 and State Senate District 36.
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 15th State Senate District. Akashic. https://akashic.app/sld-upper/24015/. Accessed May 20, 2026. License: CC BY 4.0.