- Lead
- 25,730
- Total
- 65,030
- vs nation
- D+41.0
Maryland 12th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 27,927
- Total
- 66,379
- vs nation
- D+37.6
- Lead
- 18,258
- Total
- 58,167
- vs nation
- D+29.3
- Lead
- 12,555
- Total
- 55,936
- vs nation
- D+18.6
- Lead
- 11,595
- Total
- 53,908
- vs nation
- D+14.2
- Lead
- 4,838
- Total
- 49,270
- vs nation
- D+12.3
- Lead
- 4,240
- Total
- 41,355
- vs nation
- D+9.7
- Lead
- 3,407
- Total
- 35,036
- vs nation
- D+1.2
Key facts
- 2024 presidential margin
- D+39.6MIT Election Lab
- Population
- 131,6942024 5-year
- Population density
- 3,034 / sq mi2024 5-year · TIGER/Line
- Land area
- 43.4 sq miTIGER/Line
- Median household income
- $117,0542024 5-year
- White (non-Hispanic)
- 47.8%2024 5-year
- Black
- 24.4%2024 5-year
- Hispanic / Latino
- 10.6%2024 5-year
- Peak Democratic margin
- D+42.1 in 2020MIT Election Lab
- Peak Republican margin
- R+30.7 in 1972MIT Election Lab
- Most similar
- State Senate District 13, MD · twin score 98.3
presidential history
Party record book
Maryland 12th 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
69.6%
46,220 votes · D+42.1 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 68.5%
Republican
Richard Nixon1972
64.8%
8,883 votes · R+30.7 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · 61.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
46,220votes
69.6% of the vote · D+42.1 · modeled estimate
Runner-up · Kamala Harris, 2024 · 44,152 votes
Republican
George W. Bush2004
21,920votes
44.5% of the vote · D+9.8 · modeled estimate
Runner-up · Mitt Romney, 2012 · 21,030 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
John W. Davis1924
+45.5pts D vs U.S.
Place D+20.4 · U.S. R+25.2 · modeled estimate
Runner-up · Alton B. Parker, 1904 · +44.1 pts
Republican
Richard Nixon1968
+12.6pts R vs U.S.
Place R+13.3 · U.S. R+0.7 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1956 · +7.9 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.
With a 2024 presidential margin of D+39.6, this district ranks among the most lopsided in Maryland's upper chamber, reflecting dense urban or inner-suburban settlement patterns that consistently produce outsized Democratic margins.
Across the recorded series it reached a Democratic high of 42.1 points in 2020 and a Republican high of 30.7 points in 1972. Between 2020 and 2024 the district moved 2.5 points toward the Republican candidate; the 2024 margin was 39.6 points.
A population of 131,694, a 48% non-Hispanic-white share, and a median household income of $117,054 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 13 and State Senate District 39.
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 12th State Senate District. Akashic. https://akashic.app/sld-upper/24012/. Accessed May 20, 2026. License: CC BY 4.0.