Mike Petersen
Kansas State Senator, District 28 since 2004. Next on the ballot in 2028.
- In office
- 22 yrs
- Since 2004
- Bills became law
- 0
- 9 sponsored, 2025–2026 session
- Votes missed
- 0.0%
- Chamber median 0.2%
- With party
- 99%
- On votes splitting the parties
- Last margin
- +7.4
- Won 2020
- Next election
- 2028
- Nov 7, 2028
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 9:43 AM ET
Committees
As of 2026-10.
- Information Technology · chair
- Kansas Security · vice chair
- Transportation · chair
- Utilities · vice chair
- Assessment and Taxation
- Taxation Special
- Telecommunications Special
- Ways and Means
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
No bills in this list for the 2025–2026 session.
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Petersen sits in the Kansas State Senate
Petersen is closer to the center than 40% of the chamber's Republicans.
Closest: Jeff Klemp, Larry Alley, Rick Kloos
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:50 PM ET
With Petersen’s party
- Votes with the chamber's Republicans99%
Black tick: the average of Republicans in the Kansas State Senate.
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 |
|---|---|---|---|---|---|
| Apr 10, 2026 | HB 2111: Senate Substitute for HB 2111 by Committee on Agriculture and Natural Resources -… | Yes | Yes | No | Passed 27–13 |
| Apr 10, 2026 | HB 2515: Establishing the Kansas legal tender act and providing for an income tax subtraction… | Yes | Yes | No | Passed 29–11 |
| Apr 10, 2026 | HB 2513: Making and concerning supplemental appropriations for fiscal year 2026 and appropriations… | Yes | Yes | No | Passed 21–18 |
| Apr 10, 2026 | HB 2043: Providing a protest petition to contest certain increases in property tax revenues and… | Yes | Yes | No | Passed 27–13 |
| Apr 10, 2026 | HB 2763: Requiring school districts to provide elementary students with a certain amount of daily… | Yes | Yes | No | Passed 29–10 |
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 | Kansas State Senate, District 28 | Won | — |
| 2020 | Kansas State Senate, District 28 | Won | R+7.4 |
| 2016 | Kansas State Senate, District 28 | Won | R+2.9 |
| 2012 | Kansas State Senate, District 28 | Won | R+5.4 |
| 2008 | Kansas State Senate, District 28 | Won | R+8.4 |
| 2004 | Kansas State Senate, District 28 | Won | R+15.3 |
| 1998 | Kansas House of Representatives, District 98 | Lost | D+5.4 |
| 1996 | Kansas House of Representatives, District 98 | Lost | D+2.2 |
Source: 99chambers results archive
Seats Petersen has held
- Kansas State Senate, District 28 · since 2004
Source: 99chambers results archive
Who Petersen has run against
- Jim Ward (D) · 2020 general, won
- Keith Humphrey (D) · 2016 general, won
- Keith Humphrey (D) · 2012 general, won
- Shala Perez (D) · 2008 general, won
- Henry Helgerson Jr. (D) · 2004 general, won
- Geraldine Flaharty (D) · 1998 general, lost
Source: 99chambers results archive
How we know Petersen
One person, matched across every source we use.
- Open States ocd-person/4d244ceb-6d50-4670-93db-22ad153b3961
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET