state senate districtMichigan 31st State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004R+43.8
2008R+24.0
2012R+33.9
2016R+29.3
2020R+19.5
2024R+18.6
net swing · 2004→2024D+25.2R+43.8 → R+18.6
vs. U.S. · 2024R+17.1R+18.6 vs R+1.5
presidential returns
2024 turnout 82.3% of 199,203 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
65,531
95,964
2,525
164,020
199,203
82.3%
2020
61,415
91,886
2,717
156,018
189,608†
82.3%
2016
42,589
81,185
7,784
131,558
177,915†
73.9%
2012
40,327
82,588
1,759
124,674
167,581†
74.4%
2008
47,278
77,764
2,038
127,080
163,331†
77.8%
2004
33,357
86,053
893
120,303
159,082†
75.6%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupMI SD 31MichiganUnited States
Dutch26.1%3.0%—
German18.8%17.7%12.5%
English9.9%10.5%9.5%
Irish8.3%9.9%9.4%
Polish5.6%7.2%2.2%
American3.7%4.2%5.3%
Italian2.9%4.2%4.8%
French2.1%3.0%1.6%
Mexican8.4%4.0%11.3%
Cuban0.6%0.2%0.7%
Puerto Rican0.5%0.5%1.8%
Guatemalan0.2%—0.5%
Spanish0.2%——
Cambodian0.6%——
Laotian0.6%——
Asian Indian0.3%1.2%1.4%
Chinese0.3%0.5%1.3%
Vietnamese0.3%0.2%0.6%
Korean0.3%0.2%0.4%
African American†1.5%12.2%9.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
MI SD 31
Michigan
United States
Median age
38.2
40.3
39.1
Age 18–24
12.8%
9.2%
9.2%
Age 65 and older
16.8%
18.5%
17.2%
Household economy
Measure
MI SD 31
Michigan
United States
Median household income
$90,910
$72,875
$84,427
Poverty rate
7.2%
13.2%
12.5%
Bachelor's degree or higher (25+)
38.4%
32.6%
35.6%
Languages at home
Measure
MI SD 31
Michigan
United States
Speaks a non-English language at home
8.1%
10.4%
22.3%
Spanish
5.1%
3.1%
13.6%
Other Asian & Pacific Island
1.1%
0.8%
1.1%
Religious landscape
Measure
MI SD 31
Michigan
United States
Catholic
—
14.8%
18.6%
Evangelical Protestant
—
12.1%
16.5%
Unclaimed / not counted
—
60.3%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Michigan 31st State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−43.8%
2008
−24.0%
2012
−33.9%
2016
−29.3%
2020
−19.5%
2024
−18.6%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
40.0%Harris65,531
58.5%Trump95,964
1.5%
R+18.6
D+1.0
R+17.1
164,020
R
39.4%Biden61,415
58.9%Trump91,886
1.7%
R+19.5
D+9.8
R+24.0
156,018
R
32.4%Clinton42,589
61.7%Trump81,185
5.9%
R+29.3
D+4.6
R+31.4
131,558
R
32.3%Obama40,327
66.2%Romney82,588
1.4%
R+33.9
R+9.9
R+37.8
124,674
R
37.2%Obama47,278
61.2%McCain77,764
1.6%
R+24.0
D+19.8
R+31.3
127,080
R
27.7%Kerry33,357
71.5%Bush86,053
0.7%
R+43.8
—
R+41.3
120,303
current representation
Current officeholders
RRoger VictoryState Senate · 31
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+31.1, Michigan Senate District 31 sits well outside competitive territory, making it a stronghold where intraparty dynamics often matter more than general-election contests.
Across the recorded series it reached a Republican high of 43.8 points in 2004. Between 2020 and 2024 the district moved 1.0 points toward the Democratic candidate; the 2024 margin was 18.6 points.
A population of 264,573, a 81% non-Hispanic-white share, and a median household income of $90,910 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 30 and State Senate District 21.
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Michigan 31st State Senate District. Akashic. https://akashic.app/sld-upper/26031/. Accessed May 20, 2026. License: CC BY 4.0.
How did Michigan 31st State Senate District vote in 2024?
In 2024, Michigan 31st State Senate District voted Republican by 18.6 points (R+18.6), carried by the Republican candidate. Out of 164,020 votes cast, 65,531 went Democratic and 95,964 went Republican.
How many people live in Michigan 31st State Senate District?
Michigan 31st State Senate District has a population of 264,573 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Michigan 31st State Senate District?
Median household income in Michigan 31st State Senate District is $90,910 — above the national median of $80,734. The Michigan state median is $72,875.
What is the political history of Michigan 31st State Senate District?
Akashic tracks 6 presidential elections in Michigan 31st State Senate District from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
