- Lead
- 37,658
- Total
- 60,956
- vs nation
- D+63.3
Maryland 18th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 42,932
- Total
- 62,704
- vs nation
- D+64.0
- Lead
- 38,883
- Total
- 57,799
- vs nation
- D+65.2
- Lead
- 31,569
- Total
- 54,928
- vs nation
- D+53.6
- Lead
- 30,845
- Total
- 52,771
- vs nation
- D+51.2
- Lead
- 23,936
- Total
- 48,851
- vs nation
- D+51.5
- Lead
- 19,519
- Total
- 43,554
- vs nation
- D+44.3
- Lead
- 15,602
- Total
- 39,118
- vs nation
- D+31.4
Key facts
- 2024 presidential margin
- D+61.8MIT Election Lab
- Population
- 127,6982024 5-year
- Population density
- 6,229 / sq mi2024 5-year · TIGER/Line
- Land area
- 20.5 sq miTIGER/Line
- Median household income
- $131,1682024 5-year
- White (non-Hispanic)
- 43.1%2024 5-year
- Black
- 13.9%2024 5-year
- Hispanic / Latino
- 27.6%2024 5-year
- Peak Democratic margin
- D+68.5 in 2020MIT Election Lab
- Peak Republican margin
- R+6.0 in 1952MIT Election Lab
- Most similar
- State Senate District 19, MD · twin score 98.1
presidential history
Party record book
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 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+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.
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 18th State Senate District. Akashic. https://akashic.app/sld-upper/24018/. Accessed May 20, 2026. License: CC BY 4.0.