- Lead
- 6,091
- Total
- 50,095
- vs nation
- D+13.6
Michigan 21st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 6,967
- Total
- 49,631
- vs nation
- D+9.6
- Lead
- 1,979
- Total
- 42,145
- vs nation
- D+2.6
- Lead
- 1,856
- Total
- 41,297
- vs nation
- D+0.6
- Lead
- 4,569
- Total
- 41,520
- vs nation
- D+3.7
- Lead
- 1,287
- Total
- 40,711
- vs nation
- R+0.7
- Lead
- 815
- Total
- 36,155
- vs nation
- R+2.8
- Lead
- 326
- Total
- 31,933
- vs nation
- R+7.5
Key facts
- 2024 presidential margin
- D+12.2MIT Election Lab
- Population
- 93,8762024 5-year
- Population density
- 1,844 / sq mi2024 5-year · TIGER/Line
- Land area
- 50.9 sq miTIGER/Line
- Median household income
- $122,2072024 5-year
- White (non-Hispanic)
- 57.1%2024 5-year
- Black
- 7.6%2024 5-year
- Hispanic / Latino
- 3.5%2024 5-year
- Peak Democratic margin
- D+19.6 in 1964MIT Election Lab
- Peak Republican margin
- R+70.6 in 1924MIT Election Lab
- Most similar
- State House District 56, MI · twin score 97.0
presidential history
Party record book
Michigan 21st 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
Lyndon B. Johnson1964
59.7%
11,160 votes · D+19.6 · modeled estimate
Runner-up · Joe Biden, 2020 · 56.4%
Republican
Herbert Hoover1928
82.4%
2,996 votes · R+65.4 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 81.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
28,014votes
56.4% of the vote · D+14.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 27,559 votes
Republican
Donald Trump2024
21,468votes
42.9% of the vote · D+12.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 21,047 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
Kamala Harris2024
+13.6pts D vs U.S.
Place D+12.2 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +9.6 pts
Republican
Herbert Hoover1928
+48.0pts R vs U.S.
Place R+65.4 · U.S. R+17.5 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · +45.4 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 | D | 55.4%29,675 | 44.6%23,922 | 53,597 |
| 2020 | D | 57.5%31,140 | 42.5%23,012 | 54,152 |
Michigan 21st State House District sits in the Great Lakes. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 19.6 points in 1964 and a Republican high of 70.6 points in 1924. Between 2020 and 2024 the district moved 1.9 points toward the Republican candidate; the 2024 margin was 12.2 points.
A population of 93,876, a 57% non-Hispanic-white share, and a median household income of $122,207 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 56 and State House District 9.
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 →
Michigan 21st State House District. Akashic. https://akashic.app/sld-lower/26021/. Accessed May 20, 2026. License: CC BY 4.0.