- Lead
- 24,615
- Total
- 148,627
- vs nation
- R+15.1
Michigan 20th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 21,123
- Total
- 141,888
- vs nation
- R+19.3
- Lead
- 24,036
- Total
- 121,944
- vs nation
- R+21.8
- Lead
- 15,668
- Total
- 119,973
- vs nation
- R+16.9
- Lead
- 4,044
- Total
- 126,254
- vs nation
- R+10.5
- Lead
- 23,823
- Total
- 123,246
- vs nation
- R+16.9
- Lead
- 21,065
- Total
- 106,118
- vs nation
- R+20.4
- Lead
- 10,898
- Total
- 95,156
- vs nation
- R+20.0
Key facts
- 2024 presidential margin
- R+16.6MIT Election Lab
- Population
- 262,2842024 5-year
- Population density
- 189 / sq mi2024 5-year · TIGER/Line
- Land area
- 1,389 sq miTIGER/Line
- Median household income
- $74,0872024 5-year
- White (non-Hispanic)
- 75.1%2024 5-year
- Black
- 8.9%2024 5-year
- Hispanic / Latino
- 8.5%2024 5-year
- Peak Democratic margin
- D+8.5 in 1964MIT Election Lab
- Peak Republican margin
- R+56.3 in 1924MIT Election Lab
- Most similar
- State Senate District 18, MI · twin score 91.9
presidential history
Party record book
Michigan 20th 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
Lyndon B. Johnson1964
54.1%
40,332 votes · D+8.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 49.2%
Republican
Warren G. Harding1920
75.7%
22,648 votes · R+54.3 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 75.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
60,939votes
41.0% of the vote · R+16.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 59,901 votes
Republican
Donald Trump2024
85,554votes
57.6% of the vote · R+16.6 · modeled estimate
Runner-up · Donald Trump, 2020 · 80,279 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
Barack Obama2008
−10.5pts D vs U.S.
Place R+3.2 · U.S. D+7.3 · modeled estimate
Runner-up · William J. Bryan, 1900 · −13.2 pts
Republican
William McKinley1896
+49.0pts R vs U.S.
Place R+55.0 · U.S. R+6.1 · modeled estimate
Runner-up · Thomas E. Dewey, 1944 · +37.9 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 42.0%59,393 | 58.0%82,154 | 141,547 |
| 2020 | R | 42.8%43,865 | 57.2%58,643 | 102,508 |
In 2024 it voted Republican by R+16.5, against R+3.2 in 2008. About 264,000 residents lived here, with White alone at 79.2% in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 8.5 points in 1964 and a Republican high of 56.3 points in 1924. Between 2020 and 2024 the district moved 1.7 points toward the Republican candidate; the 2024 margin was 16.6 points.
A population of 262,284, a 75% non-Hispanic-white share, and a median household income of $74,087 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 18 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 →
Michigan 20th State Senate District. Akashic. https://akashic.app/sld-upper/26020/. Accessed May 20, 2026. License: CC BY 4.0.