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| Wisconsin State Senate | |
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| General Information | |
| Party control: | Republican |
| Session start: | January 13, 2026 |
| Session end: | March 19, 2026 |
| Term length: | 4 years |
| Term limits: | None |
| Redistricting: | Legislature-dominant |
| Salary: | $60,924/year + per diem |
| Members | |
| Total: | 33 |
| Democrats: | 15 |
| Republicans: | 18 |
| Other: | 0 |
| Vacancies: | 0 |
| Leadership | |
| President: | Mary Felzkowski (R) |
| Maj. Leader: | Devin LeMahieu (R) |
| Min. Leader: | Dianne Hesselbein (D) |
| Elections | |
| Last election: | November 5, 2024 |
| Next election: | November 3, 2026 |
The Wisconsin State Senate is the upper chamber of the Wisconsin State Legislature. Alongside the Wisconsin State Assembly, it forms the legislative branch of the Wisconsin state government and works alongside the governor of Wisconsin to create laws and establish a state budget. Legislative authority and responsibilities of the Wisconsin State Senate include passing bills on public policy matters, setting levels for state spending, raising and lowering taxes, and voting to uphold or override gubernatorial vetoes.
The Wisconsin State Senate meets in the state capitol building in Madison, Wisconsin.
This page contains the following information on the Wisconsin State Senate.
The table below shows the partisan breakdown of the Wisconsin State Senate as of January 2026:
| As of January 2026 | ||
|---|---|---|
| Party | Members | |
| Democratic | 15 | |
| Republican | 18 | |
| Other | 0 | |
| Vacancies | 0 | |
| Total | 33 | |
The Senate, by roll call vote, elects a member to serve as president of the Senate.[1][2]
| State legislative salaries, 2025[3] | |
|---|---|
| Salary | Per diem |
| $60,924/year | $140/day for senators. Dane County senators are allowed half that amount. $171/day for representatives (with overnight) or $85.50/day (no overnight). Dane County representatives receive only $85.50/day. |
Wisconsin legislators assume office the first Monday in January following the election, unless the first Monday of January falls on January 1 or 2. In those cases, legislators assume office on January 3.[4]
Section 6 of Article 4 of the Wisconsin Constitution states, "No person shall be eligible to the legislature who shall not have resided one year within the state, and be a qualified elector in the district which he may be chosen to represent."[5]
Republicans won control of the Wisconsin State Senate in 2010. In 2024, they won a 18-15 majority.
The table below shows the partisan history of the Wisconsin Senate following every general election from 1992 to 2024. All data from 2006 or earlier comes from Michael Dubin's Party Affiliations in the State Legislatures (McFarland Press, 2007). Data after 2006 was compiled by Ballotpedia staff.
Wisconsin State Senate election results: 1992-2024
| Year | '92 | '94 | '96 | '98 | '00 | '02 | '04 | '06 | '08 | '10 | '12 | '14 | '16 | '18 | '20 | '22 | '24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Democrats | 18 | 16 | 17 | 17 | 18 | 15 | 14 | 18 | 18 | 14 | 15 | 14 | 13 | 14 | 12 | 11 | 15 |
| Republicans | 15 | 17 | 16 | 16 | 15 | 18 | 19 | 15 | 15 | 19 | 18 | 19 | 20 | 19 | 21 | 22 | 18 |
A state government trifecta is a term that describes single-party government, when one political party holds the governor's office and has majorities in both chambers of the legislature in a state government. Between 1992 and 2023, Wisconsin was under the following types of trifecta control:
Wisconsin Party Control: 1992-2026
Two years of Democratic trifectas • Ten years of Republican trifectas
Scroll left and right on the table below to view more years.
| Year | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | R | R | R | R | R | R | R | R | R | R | R | D | D | D | D | D | D | D | D | R | R | R | R | R | R | R | R | D | D | D | D | D | D | D | D |
| Senate | D | R | R | R | D | D | R | D | D | D | D | R | R | R | R | D | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
| House | D | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | D | D | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R |
Wisconsin state senators serve staggered, four-year terms and half of the state Senate is up for election every two years. Wisconsin holds elections for its legislature in even years.
Elections for the Wisconsin State Senate will take place in 2026. The general election is on November 3, 2026. The primary is August 11, 2026. The filing deadline is June 1, 2026.
Elections for the Wisconsin State Senate took place in 2024. The general election was on November 5, 2024. The primary was August 13, 2024. The filing deadline was June 3, 2024.
In the 2024 elections, Republicans lost four seats but maintained their majority in the Wisconsin State Senate. The Republican majority went from 22-10 to 18-15.
| Wisconsin State Senate | |||
|---|---|---|---|
| Party | As of November 5, 2024 | After November 6, 2024 | |
| Democratic Party | 10 | 15 | |
| Republican Party | 22 | 18 | |
| Vacancy | 1 | 0 | |
| Total | 33 | 33 | |
Elections for the Wisconsin State Senate took place in 2022. The general election was on November 8, 2022. A primary was scheduled for August 9, 2022. The filing deadline was June 1, 2022.
Heading into the election, Republicans held a 21-12 majority. Republicans gained one seat in the election, giving them a 22-11 majority.
| Wisconsin State Senate | |||
|---|---|---|---|
| Party | As of November 8, 2022 | After November 9, 2022 | |
| Democratic Party | 12 | 11 | |
| Republican Party | 21 | 22 | |
| Total | 33 | 33 | |
Elections for the office of Wisconsin State Senate took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for August 11, 2020. The filing deadline was June 1, 2020.
In the 2020 elections, Republicans increased their majority in the Wisconsin State Senate from 18-13 to 21-12.
| Wisconsin State Senate | |||
|---|---|---|---|
| Party | As of November 3, 2020 | After November 4, 2020 | |
| Democratic Party | 13 | 12 | |
| Republican Party | 18 | 21 | |
| Vacancy | 2 | 0 | |
| Total | 33 | 33 | |
Elections for the Wisconsin State Senate took place in 2018. An open primary election took place on August 14, 2018. The general election was held on November 6, 2018.[6] The candidate filing deadline was June 1, 2018.
In the 2018 elections, Republicans increased their majority in the Wisconsin State Senate from 18-15 to 19-14.
| Wisconsin State Senate | |||
|---|---|---|---|
| Party | As of November 6, 2018 | After November 7, 2018 | |
| Democratic Party | 15 | 14 | |
| Republican Party | 18 | 19 | |
| Total | 33 | 33 | |
Elections for the Wisconsin State Senate took place in 2016. The primary election took place on August 9, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was June 1, 2016. A total of 16 seats out of the 33 seats in the Wisconsin State Senate were up for election in 2016.
Heading into the election, Republicans held an 18-14 majority with one vacancy. Republicans gained two seats in the election, giving them a 20-13 majority.
| Wisconsin State Senate | |||
|---|---|---|---|
| Party | As of November 7, 2016 | After November 8, 2016 | |
| Democratic Party | 14 | 13 | |
| Republican Party | 18 | 20 | |
| Vacancy | 1 | 0 | |
| Total | 33 | 33 | |
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2014[edit]
Elections for 17 seats in the Wisconsin State Senate took place in 2014. A primary election took place on August 12, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was June 2, 2014. Heading into the election, Republicans held a 17-15 majority with one vacancy. Republicans gained two seats in the election, giving them a 19-14 majority.
2012[edit]
Elections for the office of Wisconsin State Senate took place in 2012. The primary election was held on August 14, 2012, and the general election was held on November 6, 2012. The candidate filing deadline was July 10, 2012. A total of 16 seats were up for election. Heading into the election, Democrats held a 17-15 majority with one vacancy. Democrats lost two seats in the election, giving Republicans an 18-15 majority.
The table below details the 10 districts with the smallest margin of victory in the November 6 general election in 2012.
Nine of the 16 senators up for election faced recall elections in 2011.
Dan Kapanke and Randy Hopper were removed by voters. The seven senators who faced re-election in 2012 but did not face recall in 2011 were: 2010[edit]
Elections for the office of Wisconsin State Senate took place in 2010. The primary election was held on September 14, 2010, and the general election was held on November 2, 2010. The candidate filing deadline was July 13, 2010. Heading into the election, Democrats held an 18-15 majority. Democrats lost four seats in the election, giving Republicans a 19-14 majority.
2008[edit]
Elections for the office of Wisconsin State Senate consisted of a primary election on September 9, 2008, and a general election on November 4, 2008. During the 2008 election, the total value of contributions to Senate candidates was $4,912,818. The top 10 contributors were:[8]
2006[edit]
Elections for the office of Wisconsin State Senate consisted of a primary election on September 12, 2006, and a general election on November 7, 2006. During the 2006 election, the total value of contributions to Senate candidates was $4,536,726. The top 10 contributors were:[9]
2004[edit]
Elections for the office of Wisconsin State Senate consisted of a primary election on September 14, 2004, and a general election on November 2, 2004. During the 2004 election, the total value of contributions to Senate candidates was $4,324,018. The top 10 contributors were:[10]
2002[edit]
Elections for the office of Wisconsin State Senate consisted of a primary election on September 10, 2002, and a general election on November 5, 2002. During the 2002 election, the total value of contributions to Senate candidates was $3,014,637. The top 10 contributors were:[11]
2000[edit]
Elections for the office of Wisconsin State Senate consisted of a primary election on September 12, 2000, and a general election on November 7, 2000. During the 2000 election, the total value of contributions to Senate candidates was $3,869,105. The top 10 contributors were:[12]
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If there is a vacancy in the Wisconsin State Legislature, a special election must be held to fill the vacant seat.[13] The governor can call for an election when allowed by law. The election cannot be held after February 1 before a spring general election, unless it is held on the same day of the election, which is the first Tuesday in April. The same requirement applies to any election preceding the fall general election (after August 1), with the exception of elections held on the first Tuesday in November.[14] Also, all vacancies must be filled quickly as long the vacancy happened before the second Tuesday in May during an election year.[15]
See sources: Wisconsin Cons. Art. IV, § 14
The state of Wisconsin has 33 state Senate districts. Each district elects one senator.
Use the interactive map below to find your district.
In Wisconsin, both congressional and state legislative district boundaries are drawn by the Wisconsin State Legislature. These lines are subject to veto by the governor.[16]
The Wisconsin Constitution requires that state legislative districts be compact and "that they be bounded by county, precinct, town, or ward lines where possible." The state constitution further stipulates that state legislative districts should be contiguous.[16]
On February 19, 2024, Gov. Tony Evers (D) signed Senate Bill 488 into law, adopting new Wisconsin legislative maps.[17] The maps were approved by majority votes in both chambers of Wisconsin's state legislature on February 13. The state Senate voted 18-14 in favor of adopting the new legislative maps, while the state Assembly vote total was 63-33.
In the 2023 Wisconsin Supreme Court election, Janet Protasiewicz had defeated Daniel Kelly, changing the balance of the court from a conservative to a liberal majority for the first time in 15 years.[18][19] Later that year on December 22, 2023, the Wisconsin Supreme Court ruled in a 4-3 vote that the state's legislative maps were unconstitutional and ordered new maps to be drawn before the 2024 election.[20] The court rejected the least change approach the conservative majority had adopted for the 2022 maps and ruled that the new maps must satisfy the state constitution's contiguity requirements.[21]
Below is the state Senate map in effect before and after the 2020 redistricting cycle. The map on the right was in effect for Wisconsin’s 2024 state legislative elections.
Click a district to compare boundaries.
Click a district to compare boundaries.
According to the 2010 U.S. Census, Wisconsin's population increased from 5.36 million to 5.69 million between 2000 and 2010.[22] This population growth was large enough to allow the state to retain its eight Congressional seats.[23]
Republicans held the governorship and majorities in the state Senate and state Assembly after the 2010 elections. As a result, the redistricting process was controlled by one party. The redistricting process was accelerated by the summer 2011 recall elections, and when Gov. Scott Walker (R) signed a bill giving the legislature the power to redistrict state boundaries before the localities finished their redistricting processes.[24] State Republicans presented their plan on July 8, 2011, and the maps passed the legislature on July 19, 2011.[25][26] Gov. Walker signed the plan into law on August 9, 2011.[26]
Several lawsuits were filed as a result of the new maps.[27] The Wisconsin Government Accountability Board identified errors in the maps, and a court also determined that two Milwaukee-area districts needed to be redrawn to better represent minority-area populations.[28]
The legislation tracker below displays all legislation that the Wisconsin State Senate has approved in its most recent legislative session—this includes legislation that has been sent from the Senate to the Assembly and legislation that has already been approved by both chambers and signed by the governor. The table below includes the bill number, its name, progress, most recent action date, and sponsor. Scroll up and down and side to side to see more. Click the bill number to read the bill text and see its voting history. Click the headings to sort the content. Rearrange the order of the headings by clicking and dragging them. Click the magnifying glass in the bottom left corner to search for specific terms. The legislation tracker is maintained and updated by BillTrack50.
In 2025, the legislature was scheduled to convene on January 6, 2025, and adjourn on December 31, 2025.
| Click [show] for past years' session dates. | |||||
|---|---|---|---|---|---|
2024[edit]In 2024, the legislature was scheduled to convene on January 16, 2024, and adjourn on March 12, 2024. 2023[edit]In 2023, the legislature was scheduled to convene on January 3, 2023, and adjourn on January 6, 2025. 2022[edit]In 2022, the legislature was scheduled to convene on January 18, 2022, and adjourn on March 8, 2022. 2021[edit]In 2021, the legislature was scheduled to convene on January 4, 2021, and adjourn on December 31, 2021. 2020[edit]In 2020, the legislature was scheduled to convene on January 14, 2020, and adjourn on May 13, 2020. [edit]
Several state legislatures had their sessions impacted as a result of the 2020 coronavirus pandemic. On April 3, 2020, Gov. Tony Evers (D) announced he was signing an executive order calling the legislature to meet in a special session beginning at 4:00 PM on April 4, 2020, to discuss changes to the spring election.The legislature adjourned without taking action on Evers' proposal. Evers issued another executive order on April 6, 2020, calling on the state legislature to convene a special session on April 7, 2020, again to consider changes to the state's spring election. The legislature again adjourned without taking action on Evers' proposal. The legislature convened for another special session on April 14, 2020. The legislature adjourned on May 13, 2020.[29] 2019[edit]In 2019, the legislature was in session from January 7, 2019, through December 31, 2019. 2018[edit]In 2018, the legislature was in session from January 16, 2018, through March 22, 2018. To read about notable events and legislation from this session, click here. 2017[edit]
In 2017, the legislature was in session from January 3, 2017, through December 31, 2017. The legislature began a special session on August 1, 2017, over a tax incentive package for Foxconn.
2016[edit]
In 2016, the legislature was in session from January 12 through March 15. 2015[edit]
In 2015, the legislature was in session from January 5 through December 31. Major issues in 2015[edit]Like many states, the issue that topped the Wisconsin State Legislature's to-do list was the state's budget. Wisconsin faced a $2.2 million budget shortfall, and lawmakers were forced to address the issue before any other projects. The Republican agenda also focused on reducing the size of government, tax cuts, entitlement reform, and school accountability. The Democrats, on the other hand, emphasized their interest in raising the minimum wage and income inequality. 2014[edit]
In 2014, the legislature was in session from January 14 through June 4. Major issues in 2014[edit]Major issues during the 2014 legislative session included income tax, public school funding, health care, and jobs.[42] 2013[edit]
In 2013, the legislature was in session from January 7 to December 31. Major issues in 2013[edit]Following the extreme polarization of the previous two years, Gov. Scott Walker (R) said he would push for a more moderate agenda in 2013. Alongside the creation of a new budget, main issues included job creation, workforce development, tax cuts, education reform, and transportation infrastructure.[43] 2012[edit]
In 2012, the legislature was in session from January 10 through March 16 with a return for limited business on April 24. Major issues in 2012[edit]With potential recalls of Governor Scott Walker (R), Lieutenant Governor Rebecca Kleefisch (R) and four Republican state senators, debate on major legislation was expected to be limited. Going into the session, Republican leaders said they were focused on passing bills on only four main issues - clearing the way for an ore mine in northern Wisconsin, easing laws regarding development on wetlands, environmental regulation, and creating a venture capital fund to help start-up businesses.[44] The six recalls dominated the session. Ultimately on June 5, 2012, recalls against the Governor, Lt. Governor, and three of the state senators were unsuccessful. The fourth recall, that against Van Wanggaard, went to a recount. Wanggaard was defeated, giving Democrats control of the Senate. 2011[edit]
In 2011, the legislature adjourned a special session at the request of Governor Scott Walker (R) on January 4, 2011. The special session was called to consider legislation regarding tax credits, tort law, medical savings accounts, other legislation relating to taxation, and the budget repair bill. The legislature's special session was ongoing. The regular session began on January 11. An extraordinary session was called by the legislature from June 13-30, with another extraordinary session held from July 19-29. [45] 2010[edit]
In 2010, the legislature convened its legislative session on January 19, and it ended its last scheduled floor-period on April 22.[46] |
The Tenth Amendment of the U.S. Constitution declares that any power not already given to the federal government is reserved to the states and the people.[47] State governments across the country use this authority to hold legislative sessions where a state's elected representatives meet for a period of time to draft and vote on legislation and set state policies on issues such as taxation, education, and government spending. The different types of legislation passed by a legislature may include resolutions, legislatively referred constitutional amendments, and bills that become law.
Article IV of the Wisconsin Constitution contains provisions related to the meeting of the Wisconsin State Legislature, of which the Senate is a part. Section 11 of Article IV states that the times for regular sessions are to be provided by law. Section 11 also states that the Governor of Wisconsin has the power to call the Legislature into special session.
Every state legislature throughout the country features its own internal procedures that it uses to govern itself and how it interacts with other parts of state government. Ballotpedia's coverage of internal state legislative procedures includes veto overrides, the role of the legislature in the state budget, and procedures for filling membership vacancies.
State legislatures can override governors' vetoes. Depending on the state, this can be done during the regular legislative session, in a special session following the adjournment of the regular session, or during the next legislative session. The rules for legislative overrides of gubernatorial vetoes in Wisconsin are listed below.
How many legislators are required to vote for an override? Two-thirds of members present in both chambers.
| Two-thirds of members present in both chambers must vote to override a veto. If all members are in attendance, this is 66 of the 99 members in the Wisconsin State Assembly and 22 of the 33 members in the Wisconsin State Senate. Wisconsin is one of 36 states that requires a two-thirds vote from both of its legislative chambers to override a veto. |
Authority: Article V, Section 10 of the Wisconsin Constitution.
| "(2) (a) If the governor rejects the bill, the governor shall return the bill, together with the objections in writing, to the house in which the bill originated. The house of origin shall enter the objections at large upon the journal and proceed to reconsider the bill. If, after such reconsideration, two−thirds of the members present agree to pass the bill notwithstanding the objections of the governor, it shall be sent, together with the objections, to the other house, by which it shall likewise be reconsidered, and if approved by two−thirds of the members present it shall become law." |
| Wisconsin on |
Wisconsin operates on a biennial budget cycle. The sequence of key events in the budget process is as follows:[48]
Wisconsin is one of 44 states in which the governor has line item veto authority.[48][49]
The governor is constitutionally and statutorily required to submit a balanced budget. In addition, the legislature is required to pass a balanced budget.[48]
Every state legislature and state legislative chamber in the country contains several legislative committees. These committees are responsible for studying, amending, and voting on legislation before it reaches the floor of a chamber for a full vote. The different types of committees include standing committees, select or special, and joint.
Ballotpedia covers standing and joint committees. The Wisconsin State Senate has 10 standing committees:
In every state but Delaware, voter approval is required to enact a constitutional amendment. In each state, the legislature has a process for referring constitutional amendments before voters. In 18 states, initiated constitutional amendments can be put on the ballot through a signature petition drive. There are also many other types of statewide measures.
The methods in which the Wisconsin Constitution can be amended:
Article XII of the Wisconsin Constitution provides two methods of amendment:
Wisconsin citizens do not have the power of amending the constitution through initiated constitutional amendments.
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