RepublicanIn office since Nov 2020

Mary Felzkowski

Wisconsin State Senator, District 12 since 2020. Next on the ballot in 2028.

Wisconsin State Senator, District 12

In office
6 yrs
Since 2020
Bills became law
11
43 sponsored, 2025–2026 session
Votes missed
0.0%
Chamber median 0.0%
With party
99%
On votes splitting the parties
Last margin
+35.1
Won 2024
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.

  • Employment Relations · co-chair
  • Legislative Council · co-chair
  • Legislative Organization · co-chair
  • Organization · vice chair
  • Special Committee on Oversight of the Department of Justice · chair
  • State-Tribal Relations Special

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 43 sponsored · 11 became law
BillIntroCmteSenateHouseLaw
SB 482 Relating to: increasing the carryover period of the research income tax credit. (FE)
Business · Became law Apr 2026
SB 531 Relating to: postloss assignment of rights or benefits under property insurance policies to residential…
Contractor · Became law Apr 2026
SB 921 Relating to: personal financial literacy high school graduation requirement.
Financial institution · Became law Apr 2026
SB 504 Relating to: dental provider network rental by insurance plans.
Dentistry · Became law Apr 2026
SB 798 Relating to: a wetland assured delineation program, extending the time limit for emergency rule procedures,…
Administrative rules · Became law Apr 2026

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Felzkowski sits in the Wisconsin State Senate

Felzkowski is closer to the center than 72% of the chamber's Republicans.

Dem. medianRep. medianFelzkowskiMore liberalMore conservative

Closest: Rob Stafsholt, Eric Wimberger, Patrick Testin

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 5:09 PM ET

With Felzkowski’s party

  • Votes with the chamber's Republicans99%
  • Cosponsorships of the other party's bills31%

Black tick: the average of Republicans in the Wisconsin State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Felzkowski’s vote, each party’s majority, and the result. An orange vote differs from most Republicans.

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Felzkowski 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.

YearRaceResultMargin
2024Wisconsin State Senate, District 12WonR+35.1
2020Wisconsin State Senate, District 12WonR+31.4
2018Wisconsin State Assembly, District 35WonR+25.5
2016Wisconsin State Assembly, District 35WonR+32.1
2014Wisconsin State Assembly, District 35Won—
2012Wisconsin State Assembly, District 35WonR+11.5

Source: 99chambers results archive

Seats Felzkowski has held

Source: 99chambers results archive

Who Felzkowski has run against

  • Andi Rich (D) · 2024 general, won
  • Ed Vocke (D) · 2020 general, won
  • Mark A. Martello (D) · 2018 general, won
  • Renea Frederick (D) · 2016 general, won
  • Kevin Koth (D) · 2012 general, won

Source: 99chambers results archive

How we know Felzkowski

One person, matched across every source we use.

Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 9:43 AM ET