Wisconsin State Senate


The Wisconsin Senate is the upper house of the Wisconsin State Legislature. Together with the Wisconsin State Assembly they constitute the legislative branch of the state of Wisconsin. The powers of the Wisconsin Senate are modeled after those of the U.S. Senate. The Wisconsin Senate is controlled by the Republican Party, as it has been for 20 of the past 22 years.
The Wisconsin Constitution ties the size of the State Senate to that of the Assembly, by limiting its size to no less than 1/4, nor more than 1/3, of the size of the Assembly. Currently, Wisconsin is divided into 33 Senate Districts apportioned throughout the state based on population as determined by the decennial census, for a total of 33 senators. A Senate district is formed by combining three Assembly districts. Similar to the U.S. Senate, in addition to its duty of reviewing and voting on all legislation passed through the legislature, the State Senate has the exclusive responsibility of confirming certain gubernatorial appointments, particularly cabinet secretaries and members of boards and commissions. Senators are elected for four-year terms, staggered so that approximately half of the Senate is up for election every two years. If a vacancy occurs in a Senate seat between elections, it may be filled only by a special election. The Senate chamber is in the south wing of the Wisconsin State Capitol, in Madison. In February 2024, the legislative maps of the Senate, along with the State Assembly, were redrawn following a court decision that found them to be unconstitutionally gerrymandered in favor of Republicans.

Salary and benefits

The salary of all legislators serving in the 2025 Wisconsin Legislature is $60,924, which is an increase of 6.12% from the previous biennium. The speaker of the assembly also receives an additional $25 monthly stipend. In addition to salaries, senators outside Madison, Wisconsin may receive a per diem up to $115 to cover living expenses while they are in Madison on state business. Members of the Dane County delegation may receive a per diem of half the amount to cover expenses.

Current session

Composition

Senate officers

Members

DistrictSenatorPartyResidenceCurrent
age		First
elected		Next
election
01RepNew Franken20182026
02Eric WimbergerRepOconto20202028
03DemMilwaukee20022026
04DemMilwaukee20242028
05RepBrookfield20222026
06DemMilwaukee20162028
07DemMilwaukee20102026
08Jodi Habush SinykinDemWhitefish Bay20242028
09RepOostburg20142026
10RepNew Richmond20202028
11RepWhitewater20142026
12RepTomahawk20202028
13RepWatertown20212026
14Sarah KeyeskiDemLodi20242028
15DemBeloit20222026
16Melissa RatcliffDemCottage Grove20242028
17RepSpring Green20142026
18DemAppleton20242028
19RepAppleton20222026
20RepFond du Lac20162028
21RepRacine20142026
22DemPleasant Prairie19962028
23RepThorp20222026
24RepStevens Point20162028
25RepBirchwood20222026
26DemMadison20202028
27DemMiddleton20222026
28RepNew Berlin20202028
29RepMosinee20222026
30Jamie WallDemGreen Bay20242028
31DemBrunswick20182026
32DemOnalaska20202028
33RepDelafield20152026

Notable past members

Past composition of the Senate