akashic
1876–2024
State Senate District 31·Michigan

Michigan 31st State Senate District has voted Republican in twenty-eight straight presidential cycles.

One of Michigan's most reliably Republican legislative districts

1876 — 2024·38 elections
MI
Latest
R+21
in 2024
Archetype
Republican loyalist
since the recent cycles
Population
214,737
2024 ACS

Michigan 31st State Senate District, Michigan: Republican loyalist district. In 2024, voted R+21%. Republican peak: R+71 in 1928.

Key facts

2024 presidential margin
R+21MIT Election Lab
Political archetype
Republican loyalistAkashic typology
Population
214,7372024 5-year
Median household income
$90,2192024 5-year
White (non-Hispanic)
84.1%2024 5-year
Black
1.6%2024 5-year
Hispanic / Latino
10.2%2024 5-year
Peak Democratic margin
D+2 in 1912MIT Election Lab
Peak Republican margin
R+71 in 1928MIT Election Lab
2024 results by constituent county
2 counties · 0 D · 2 R
R+60
D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
R
−20.7%
49,48875,832127,270
R
−21.6%
46,01671,993120,216
R
−30.2%
32,05762,968102,423
R
−33.7%
30,71662,55094,594
R
−23.3%
36,49159,16397,173
R
−43.2%
25,69465,41091,854
R
−43.8%
21,34955,86578,870
R
−35.3%
19,50643,52968,047
R
−35.2%
16,08140,27268,733
R
−52.2%
13,60443,67357,598
R
−59.3%
10,85642,84353,936
R
−43.0%
13,31236,50853,994
R
−48.7%
11,89935,03847,505
R
−45.9%
10,90330,16141,987
R
−41.8%
9,01923,87235,495
R
−9.1%
14,63017,56832,250
R
−50.4%
7,74023,53831,370
R
−50.1%
6,86820,74227,703
R
−47.3%
5,74416,37922,478
R
−29.2%
6,33911,70218,391
R
−34.0%
6,14012,55218,832
R
−26.4%
6,64211,44718,209
R
−8.0%
6,9728,25415,942
R
−19.1%
5,9548,87515,293
R
−71.0%
1,89211,30813,269
R
−66.0%
1,3908,65811,015
R
−60.4%
1,7877,7549,873
R
−15.6%
2,9484,0897,293
O
+2.0%
1,5281,3976,517
R
−37.9%
1,8154,2406,391
R
−55.3%
1,1734,4345,896
R
−26.4%
2,3164,0346,496
R
−18.4%
2,7043,9566,817
R
−9.4%
2,2742,7925,493
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Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
18.5%
English
9.7%
Irish
8.2%
Polish
5.5%
American
3.6%
Italian
2.9%
French
2.1%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 36.7 in this county, 39.1 nationally
Male
Age
Female
0.8%
85+
1.3%
2.2%
75–84
2.7%
4.7%
65–74
5.1%
5.9%
55–64
6.0%
5.5%
45–54
5.4%
6.2%
35–44
6.1%
6.3%
25–34
6.0%
6.2%
18–24
6.6%
9.0%
5–17
8.5%
2.8%
<5
2.7%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$90,219
State Senate District 31 ranks near the middle of US counties.
State Senate District 31$90,219
Michigan$72,875
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.3%
Child poverty is below the national average.
Children under 187.7%
Working age (18–64)8.6%
Seniors (65+)8.2%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
91.9%
speak English only
Spanish5.1%
Asian & Pacific Islander1.6%
Other Indo-European1.0%
Other languages0.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Mainline Protestant
19.8%
Other Christian
10.6%
Catholic & Orthodox
9.7%
Pentecostal & Holiness
2.8%
Methodist
0.9%
Non-Christian
0.1%
Source · 2020 US Religion Census. Remaining 56.1% of residents not counted as adherents by any reporting body.

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.

The Republican margin in Michigan 31st State Senate District reached its widest at seventy-one points in 1928. The margin in 2024 was twenty-one points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $90,219, a 84% non-Hispanic-white share, and a population of 214,737 together describe a district whose political habits are deeply settled.

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.
State Senate District 31, Michigan. Akashic. https://akashic.app/sld-upper/26031/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did State Senate District 31, Michigan vote in 2024?
In 2024, State Senate District 31, Michigan voted Republican by 20.7 points (R+21), carried by the Republican candidate. Out of 127,270 votes cast, 49,488 went Democratic and 75,832 went Republican.
What is State Senate District 31, Michigan's political archetype?
Akashic classifies State Senate District 31, Michigan as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 0 times, Republican 33 times, and other 1 times.
How many people live in State Senate District 31, Michigan?
State Senate District 31, Michigan has a population of 214,737 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 31, Michigan?
Median household income in State Senate District 31, Michigan is $90,219 — above the national median of $80,734. The Michigan state median is $72,875.
What is the political history of State Senate District 31, Michigan?
Akashic tracks 38 presidential elections in State Senate District 31, Michigan from 1876 to 2024. Of those, 0 went Democratic and 33 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.