Maryland 40th 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
Barack Obama2008
91.9%
52,146 votes · D+84.7 · modeled estimate
Runner-up · Barack Obama, 2012 · 91.5%
Republican
William McKinley1896
46.0%
9,106 votes · D+4.3 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 44.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
58,565votes
84.3% of the vote · D+68.5 · modeled estimate
Runner-up · Barack Obama, 2012 · 53,881 votes
Republican
Dwight D. Eisenhower1956
25,678votes
42.9% of the vote · D+14.2 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 24,133 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
Hillary Clinton2016
+81.4pts D vs U.S.
Place D+83.5 · U.S. D+2.1 · modeled estimate
Runner-up · Kamala Harris, 2024 · +81.1 pts
Republican
William McKinley1896
−10.3pts R vs U.S.
Place D+4.3 · U.S. R+6.1 · modeled estimate
Runner-up · William H. Taft, 1912 · −24.8 pts
current representation
Current officeholders
DFrank ConawayState House · 40
DMarlon AmpreyState House · 40
DMelissa WellsState House · 40
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
D
89.4%41,948
10.6%4,962
46,910
2018
D
90.6%35,003
9.4%3,622
38,625
With a 2024 presidential margin of D+79.7, District 40 ranks among the most lopsided state house districts in the country, reflecting a dense, heavily Democratic electorate concentrated in the Baltimore area.
Across the recorded series it reached a Democratic high of 84.7 points in 2008. Between 2020 and 2024 the district moved 4.3 points toward the Republican candidate; the 2024 margin was 79.7 points.
A population of 124,305, a 21% non-Hispanic-white share, and a median household income of $47,094 describe the district. The district's voting pattern over the last decade is most similar to that of State Legislative District 45 and State Legislative District 41.
Akashic
Political twins — state-house districts
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Maryland 40th State House District. Akashic. https://akashic.app/sld-lower/24040/. Accessed May 20, 2026. License: CC BY 4.0.
How did Maryland 40th State House District vote in 2024?
In 2024, Maryland 40th State House District voted Democratic by 79.7 points (D+79.7), carried by the Democratic candidate. Out of 43,462 votes cast, 38,318 went Democratic and 3,691 went Republican.
How many people live in Maryland 40th State House District?
Maryland 40th State House District has a population of 124,305 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Maryland 40th State House District?
Median household income in Maryland 40th State House District is $47,094 — below the national median of $80,734. The Maryland state median is $103,678.
What is the political history of Maryland 40th State House District?
Akashic tracks 38 presidential elections in Maryland 40th State House District from 1876 to 2024. Of those, 38 went Democratic and 0 went Republican.