Kevin Petersen
Wisconsin State Assemblymember, District 57 since 2006. Did not run for re-election in 2026; leaves office in January 2027.
- In office
- 20 yrs
- Since 2006
- Bills became law
- 5
- 24 sponsored, 2025–2026 session
- Votes missed
- 2.9%
- Chamber median 0.0%
- With party
- 100%
- On votes splitting the parties
- Last margin
- +33.9
- Won 2024
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 9:43 AM ET
Committees
As of 2026-10.
- Legislative Council
- Organization
- Review of Administrative Rules
- Review of Administrative Rules
- Rules
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Franchise — Taxation · Became law Apr 2026
Corporation · Became law Apr 2026
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Petersen sits in the Wisconsin State Assembly
Petersen is closer to the center than 76% of the chamber's Republicans.
Closest: Shannon Zimmerman, Jeff Mursau, Calvin Callahan
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:09 PM ET
With Petersen’s party
- Votes with the chamber's Republicans100%
- Cosponsorships of the other party's bills57%
Black tick: the average of Republicans in the Wisconsin State Assembly.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Petersen’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.
| Date | Bill | Petersen | Rep. majority | Dem. majority | Result |
|---|---|---|---|---|---|
| Feb 19, 2026 | SB 176: Relating to: an income and franchise tax exemption for broadband expansion grants and for… | Yes | Yes | No | Passed 60–34 |
| Feb 19, 2026 | SB 291: Relating to: making certain child care expenditures eligible for the business development… | Yes | Yes | No | Passed 63–31 |
| Feb 19, 2026 | SB 36: Relating to: an income tax exemption for cash tips paid to an employee. (FE) | Yes | Yes | No | Passed 60–31 |
| Feb 19, 2026 | AB 180: Relating to: requiring the Department of Health Services to seek any necessary waiver to… | Yes | Yes | No | Passed 71–22 |
| Feb 18, 2026 | SB 785: Relating to: including information about investigations of license holders in an online… | Yes | Yes | No | Passed 66–32 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Petersen was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin |
|---|---|---|---|
| 2024 | Wisconsin State Assembly, District 57 | Won | R+33.9 |
| 2022 | Wisconsin State Assembly, District 40 | Won | R+50.9 |
| 2020 | Wisconsin State Assembly, District 40 | Won | R+38.8 |
| 2018 | Wisconsin State Assembly, District 40 | Won | R+28.7 |
| 2016 | Wisconsin State Assembly, District 40 | Won | R+29.2 |
| 2014 | Wisconsin State Assembly, District 40 | Won | — |
| 2012 | Wisconsin State Assembly, District 40 | Won | — |
| 2010 | Wisconsin State Assembly, District 40 | Won | R+38.3 |
| 2008 | Wisconsin State Assembly, District 40 | Won | R+16.6 |
| 2006 | Wisconsin State Assembly, District 40 | Won | R+5.3 |
Source: 99chambers results archive
Seats Petersen has held
- Wisconsin State Assembly, District 57 · since 2024
- Wisconsin State Assembly, District 40 · since 2006
Source: 99chambers results archive
Who Petersen has run against
- Ruth Caves (D) · 2024 general, won
- Henry Fries (I) · 2022 general, won
- Deb Silvers (D) · 2020 general, won
- Erin Tracy (D) · 2018 general, won
- Dmitri Martin (D) · 2016 general, won
- Jon Baltmanis (D) · 2010 general, won
Source: 99chambers results archive
How we know Petersen
One person, matched across every source we use.
- Open States ocd-person/43c33bdc-3c41-47cc-8ffb-10a043ecdc93
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET