- Lead
- 7,907
- Total
- 75,206
- vs nation
- R+9.0
Maryland 31st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 7,877
- Total
- 73,144
- vs nation
- R+15.2
- Lead
- 16,084
- Total
- 65,467
- vs nation
- R+26.7
- Lead
- 17,870
- Total
- 65,009
- vs nation
- R+31.3
- Lead
- 19,053
- Total
- 65,219
- vs nation
- R+36.5
- Lead
- 24,128
- Total
- 61,912
- vs nation
- R+36.5
- Lead
- 17,227
- Total
- 50,999
- vs nation
- R+34.3
- Lead
- 13,810
- Total
- 43,478
- vs nation
- R+40.3
Key facts
- 2024 presidential margin
- R+10.5MIT Election Lab
- Population
- 130,7392024 5-year
- Population density
- 1,865 / sq mi2024 5-year · TIGER/Line
- Land area
- 70.1 sq miTIGER/Line
- Median household income
- $131,7112024 5-year
- White (non-Hispanic)
- 75.5%2024 5-year
- Black
- 9.1%2024 5-year
- Hispanic / Latino
- 5.9%2024 5-year
- Peak Republican margin
- R+65.4 in 1972MIT Election Lab
- Most similar
- State Legislative District 4, MD · twin score 92.9
presidential history
Party record book
Maryland 31st State House 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
Franklin D. Roosevelt1932
46.4%
1,731 votes · R+4.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1940 · 44.3%
Republican
Richard Nixon1972
82.1%
22,963 votes · R+65.4 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 77.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
32,458votes
43.2% of the vote · R+10.5 · modeled estimate
Runner-up · Joe Biden, 2020 · 31,455 votes
Republican
George W. Bush2004
42,672votes
68.9% of the vote · R+39.0 · modeled estimate
Runner-up · John McCain, 2008 · 41,543 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
−3.4pts D vs U.S.
Place R+28.6 · U.S. R+25.2 · modeled estimate
Runner-up · Kamala Harris, 2024 · −9.0 pts
Republican
George H. W. Bush1988
+43.9pts R vs U.S.
Place R+51.7 · U.S. R+7.7 · modeled estimate
Runner-up · Richard Nixon, 1972 · +42.2 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 31st State House District sits in the Mid-Atlantic. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 65.4 points in 1972. The 2024 margin was 10.5 points.
A population of 130,739, a 76% non-Hispanic-white share, and a median household income of $131,711 describe the district. The district's voting pattern over the last decade is most similar to that of State Legislative District 4 and State Legislative District 5.
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 31st State House District. Akashic. https://akashic.app/sld-lower/24031/. Accessed May 20, 2026. License: CC BY 4.0.