Maryland 18th 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
82.9%
52,012 votes · D+68.5 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 81.7%
Republican
Dwight D. Eisenhower1952
52.8%
4,231 votes · R+6.0 · modeled estimate
Runner-up · Thomas E. Dewey, 1948 · 51.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
52,012votes
82.9% of the vote · D+68.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · 48,347 votes
Republican
George H. W. Bush1988
13,839votes
38.7% of the vote · D+22.2 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 13,119 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
+65.2pts D vs U.S.
Place D+67.3 · U.S. D+2.1 · modeled estimate
Runner-up · Joe Biden, 2020 · +64.0 pts
Republican
Thomas E. Dewey1948
+8.8pts R vs U.S.
Place R+4.3 · U.S. D+4.5 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +1.9 pts
current representation
Current officeholders
DJeff WaldstreicherState Senate · 18
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
77.3%45,680
22.7%13,436
59,116
2018
D
79.5%37,953
20.5%9,771
47,724
With a 2024 presidential margin of D+61.8, this Baltimore-area district ranks among the most reliably Democratic constituencies in the state, reflecting dense urban population patterns that consistently produce lopsided margins.
Across the recorded series it reached a Democratic high of 68.5 points in 2020 and a Republican high of 6.0 points in 1952. Between 2020 and 2024 the district moved 6.7 points toward the Republican candidate; the 2024 margin was 61.8 points.
A population of 127,698, a 43% non-Hispanic-white share, and a median household income of $131,168 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 19 and State Senate District 17.
Akashic
Political twins — state-senate districts
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.
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 18th State Senate District. Akashic. https://akashic.app/sld-upper/24018/. Accessed May 20, 2026. License: CC BY 4.0.
How did Maryland 18th State Senate District vote in 2024?
In 2024, Maryland 18th State Senate District voted Democratic by 61.8 points (D+61.8), carried by the Democratic candidate. Out of 60,956 votes cast, 48,347 went Democratic and 10,689 went Republican.
When did Maryland 18th State Senate District last vote Republican?
The most recent presidential election in which Maryland 18th State Senate District voted Republican was 1952.
How many people live in Maryland 18th State Senate District?
Maryland 18th State Senate District has a population of 127,698 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Maryland 18th State Senate District?
Median household income in Maryland 18th State Senate District is $131,168 — above the national median of $80,734. The Maryland state median is $103,678.
What is the political history of Maryland 18th State Senate District?
Akashic tracks 38 presidential elections in Maryland 18th State Senate District from 1876 to 2024. Of those, 36 went Democratic and 2 went Republican.