Wisconsin 31st State Senate District, Wisconsin: Tossup district. In 2024, voted R+2%. Democratic peak: D+19 in 2008.
Key facts
- 2024 presidential margin
- R+2MIT Election Lab
- Political archetype
- TossupAkashic typology
- Population
- 178,4402024 5-year
- Median household income
- $74,6762024 5-year
- White (non-Hispanic)
- 89.3%2024 5-year
- Black
- 1.3%2024 5-year
- Hispanic / Latino
- 3.1%2024 5-year
- Peak Democratic margin
- D+19 in 2008MIT Election Lab
- Peak Republican margin
- R+2 in 2024MIT Election Lab
Constituent county margins for State Senate District 31, WIOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
5 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 50,189 | 51,831 | 103,572 | ||
| R | 46,639 | 47,144 | 95,782 | ||
| R | 40,563 | 41,891 | 88,900 | ||
| D | 47,569 | 39,241 | 88,217 | ||
| D | 51,812 | 35,358 | 88,652 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
36.8%
Irish
10.0%
English
7.1%
Polish
5.5%
American
3.6%
French
2.9%
Italian
2.5%
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: 37.3 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$74,676
State Senate District 31 ranks near the middle of US counties.
State Senate District 31$74,676
Wisconsin$77,485
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
11.2%
Child poverty is below the national average.
Children under 1810.3%
Working age (18–64)11.5%
Seniors (65+)10.7%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
94.2%
speak English only
Spanish2.2%
Asian & Pacific Islander2.2%
Other Indo-European1.2%
Other languages0.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 57.6% of residents not counted as adherents by any reporting body.
Wisconsin's 31st Senate District logged a D+5.3 margin in 2024, reflecting the suburban realignment reshaping legislative maps across the upper Midwest. Turnout patterns here often signal broader statewide competitiveness.
The district's recent history is a story of close margins. The Democratic margin reached nineteen points in 2008; the Republican margin reached two points in 2024. Most other elections have been decided by single-digit points.
Its demographics — a population of 178,440, a 89% non-Hispanic-white share, a median household income of $74,676 — situate the district close to national averages on several dimensions.
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
State Senate District 31, Wisconsin — The Long Memory. Akashic Intelligence — The Long Memory. https://tiers.akashic.app/sld-upper/55031/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 31, Wisconsin vote in 2024?
In 2024, State Senate District 31, Wisconsin voted Republican by 1.6 points (R+2), carried by the Republican candidate. Out of 103,572 votes cast, 50,189 went Democratic and 51,831 went Republican.
What is State Senate District 31, Wisconsin's political archetype?
Akashic classifies State Senate District 31, Wisconsin as a "Tossup" district based on its long-arc presidential voting pattern. Across 5 elections in the dataset, the district has voted Democratic 2 times, Republican 3 times, and other 0 times.
When did State Senate District 31, Wisconsin last vote Democratic?
The most recent presidential election in which State Senate District 31, Wisconsin voted Democratic was 2012.
How many people live in State Senate District 31, Wisconsin?
State Senate District 31, Wisconsin has a population of 178,440 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, Wisconsin?
Median household income in State Senate District 31, Wisconsin is $74,676 — below the national median of $80,734. The Wisconsin state median is $77,485.
What is the political history of State Senate District 31, Wisconsin?
Akashic tracks 5 presidential elections in State Senate District 31, Wisconsin from 2008 to 2024. Of those, 2 went Democratic and 3 went Republican. The district's archetype — "Tossup" — captures the overall trajectory of that voting record.