Wisconsin State Senate · District 9

Devin LeMahieu

Republican Senate Majority Leader

Where they sit

Every current senator, placed from most liberal to most conservative by how they voted on contested bills.

How these numbers work →
LeMahieu
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Devin LeMahieu's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How these numbers work

Wisconsin State Senate75thpercentile
More conservative than 75% of the Wisconsin State Senate.
Most liberalMost conservative
9th most conservative of 33
Votes with the Senate Majority Leader
—

Leads the chamber, so this score doesn't apply.

Democrats Republicans 0%100%

Each tick is a current senator, by party; the dot is Devin LeMahieu.

Votes with own party
100%
Democrats Republicans 75%100%

Each tick is a current senator, by party; the dot is Devin LeMahieu.

On 184 party-line votesPartisan rank: 1 of 33 in the Senate (tied with 7 others)No one in the Senate votes with their party more often

Bills

The bills Devin LeMahieu sponsored this term and how far they got. Co-sponsors aren’t counted.

How these numbers work →
Bills: Devin LeMahieu
Bills
Sponsored5
Passed both chambers1
Became law0
Vetoed by the Governor1

Rank by bills passed: Rank 17 of 33 in the Senate (tied with 1 other) · 17 of 18 Republicans (tied with 1 other)

A bill's sponsor is its lead author, the first legislator named when it was introduced; coauthors and cosponsors aren't counted, and a bill a committee introduced (the Joint Legislative Council's, or one introduced at the Governor's request) counts for no member.

Bills that passed both chambers

Bills that passed both chambers: Devin LeMahieu
BillResultFinal action
SB 699
Alternative methods of providing pupil transportation services
Vetoed April 6, 2026

Budget projects

Wisconsin's budget doesn't name the legislator who asked for an item, so there's no budget figure for Wisconsin legislators.

Contested votes where they split

No contested vote against the leader of the chamber or most of their party.

Every roll call

How Devin LeMahieu voted on each of the 260 floor roll calls while in office, newest first.

Every roll call: Devin LeMahieu
DateVoteTheir vote Most of their partySenate Majority LeaderYeas–nays
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Contested and party-line votes link to their own pages; the rest link to the official record.

Contact, committees and caucuses

Contact

Official page
legis.wisconsin.gov
Email
sen.lemahieu@legis.wisconsin.gov
Capitol office
State Capitol Room 211 South, P.O. Box 7882 , 2 E. Main St., Madison, WI 53707
608-266-2056

Committees

  • Organization Chair
  • Employment Relations
  • Legislative Council
  • Legislative Organization

Contact details and committee assignments from Open States' data on the Wisconsin Legislature, which it collects from the chambers' websites, as of Oct. 15, 2026.

Source: the Wisconsin State Assembly's and Senate's roll-call records, Jan. 6, 2025 to May 13, 2026. How these numbers work · Corrections