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| Oregon State Senate | |
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| General Information | |
| Party control: | Democrat |
| Session start: | January 21, 2025 |
| Session end: | June 27, 2025 |
| Term length: | 4 years |
| Term limits: | None |
| Redistricting: | Legislature-dominant |
| Salary: | $35,052/year + per diem |
| Members | |
| Total: | 30 |
| Democrats: | 18 |
| Republicans: | 12 |
| Other: | 0 (Independent of Oregon) |
| Vacancies: | 0 |
| Leadership | |
| President: | Rob Wagner (D) |
| Maj. Leader: | Kayse Jama (D) |
| Min. Leader: | Bruce Starr (R) |
| Elections | |
| Last election: | November 5, 2024 |
| Next election: | November 3, 2026 |
The Oregon State Senate is the upper chamber of the Oregon State Legislature. Alongside the Oregon House of Representatives, it forms the legislative branch of the Oregon state government and works alongside the governor of Oregon to create laws and establish a state budget. Legislative authority and responsibilities of the Oregon 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 Oregon State Senate meets in the state capitol building in Salem, Oregon.
This page contains the following information on the Oregon State Senate.
The table below shows the partisan breakdown of the Oregon State Senate as of November 2025:
| Party | As of November 2025 | |
|---|---|---|
| Democratic Party | 18 | |
| Republican Party | 12 | |
| Independent | 0 | |
| Independent Party of Oregon | 0 | |
| Vacancies | 0 | |
| Total | 30 | |
The president of the Senate is the presiding officer of the body.
| State legislative salaries, 2024[1] | |
|---|---|
| Salary | Per diem |
| $35,052/year | $157/day |
Oregon legislators assume office the second Monday in January following the election.[2]
According to Article IV, Section 8 of the Oregon Constitution, candidates for the Oregon State Legislature must meet the following qualifications:[3]
In 2022, Oregon voters approved Measure 113, which disqualifies legislators from seeking re-election if they accumulate more than 10 unexcused absences in a single legislative session.
Candidates must also be registered to vote.[4]
Democrats won control of the Oregon State Senate in 2004. In 2024, they won a 18-12 majority.
The table below shows the partisan history of the Oregon 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.
Oregon 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 | 16 | 11 | 10 | 12 | 14 | 15 | 18 | 17 | 18 | 16 | 16 | 18 | 17 | 18 | 18 | 17 | 18 |
| Republicans | 14 | 19 | 20 | 18 | 16 | 15 | 12 | 11 | 12 | 14 | 14 | 12 | 13 | 12 | 12 | 12 | 12 |
| Other | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
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, Oregon was under the following types of trifecta control:
Oregon Party Control: 1992-2025
Seventeen years of Democratic trifectas • No 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D |
| Senate | D | D | D | R | R | R | R | R | R | R | R | S | S | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D |
| House | R | R | R | R | R | R | R | R | R | R | R | R | R | R | R | D | D | D | D | S | S | D | D | D | D | D | D | D | D | D | D | D | D | D |
Oregon state senators serve staggered, four-year terms and half of the Senate is up for election every two years. Oregon holds elections for its legislature in even years.
Elections for the Oregon State Senate will take place in 2026. The general election is on November 3, 2026.
Elections for the Oregon State Senate took place in 2024. The general election was on November 5, 2024. The primary was May 21, 2024. The filing deadline was March 12, 2024.
Before the 2024 election, Democrats held a 17-12-1 majority and they increased their majority to 18-12 after the election.
| Oregon State Senate | |||
|---|---|---|---|
| Party | As of November 5, 2024 | After November 6, 2024 | |
| Democratic Party | 17 | 18 | |
| Republican Party | 12 | 12 | |
| Independent Party of Oregon | 1 | 0 | |
| Total | 30 | 30 | |
Elections for the Oregon State Senate took place in 2022. The general election was on November 8, 2022. A primary was scheduled for May 17, 2022. The filing deadline was March 8, 2022.
Heading into the 2022 election, Democrats held an 18-11-1 majority. Following the election, Republicans gained one net seat, giving the Democrats a 17-12-1 majority. On January 1, 2023, before the new Oregon Senate was sworn in, State Senator Dallas Heard (R) resigned, giving the chamber one vacancy.
| Oregon State Senate | |||
|---|---|---|---|
| Party | As of November 8, 2022 | After November 9, 2022 | |
| Democratic Party | 18 | 17 | |
| Republican Party | 11 | 12 | |
| Independent | 1 | 1 | |
| Total | 30 | 30 | |
Elections for the office of Oregon State Senate took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for May 19, 2020. The filing deadline was March 10, 2020.
Heading into the election, Democrats held an 18-12 majority. Democrats maintained their 18-12 majority in the election.
| Oregon State Senate | |||
|---|---|---|---|
| Party | As of November 3, 2020 | After November 4, 2020 | |
| Democratic Party | 18 | 18 | |
| Republican Party | 12 | 12 | |
| Total | 30 | 30 | |
Elections for the Oregon State Senate took place in 2018. A closed primary election took place on May 15, 2018, and the general election was held on November 6, 2018. The candidate filing deadline was March 6, 2018.[5]
In the 2018 elections, Democrats increased their majority in the Oregon State Senate from 17-13 to 18-12.
| Oregon State Senate | |||
|---|---|---|---|
| Party | As of November 6, 2018 | After November 7, 2018 | |
| Democratic Party | 17 | 18 | |
| Republican Party | 13 | 12 | |
| Total | 30 | 30 | |
Elections for the Oregon State Senate took place in 2016. The primary election took place on May 17, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was March 8, 2016. A total of 16 seats out of the 30 seats in the Oregon State Senate were up for election in 2016.
Heading into the election, Democrats held an 18-12 majority. Democrats lost one seat in the election, giving them a 17-13 majority.
| Oregon State Senate | |||
|---|---|---|---|
| Party | As of November 7, 2016 | After November 8, 2016 | |
| Democratic Party | |||
| Republican Party | |||
| Total | 30 | 30 | |
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2014[edit]
Elections for the Oregon State Senate took place in 2014. A primary election took place on May 20, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was March 11, 2014. Heading into the election, Democrats held a 16-14 majority. Democrats gained two seats in the election, giving them an 18-12 majority.
2012[edit]
Elections for the office of Oregon State Senate took place in 2012. The primary election was held on May 15, 2012, and the general election was held on November 6, 2012. The candidate filing deadline was March 6, 2012. A total of 15 seats were up for election. Heading into the election, Democrats held a 16-14 majority. No partisan change occurred in the election.
During the 2012 election, the total value of contributions to the 37 Senate candidates was $7,962,888. The top 10 contributors were:[6]
The following table details the 10 districts with the smallest margin of victory in the November 6 general election.
2010[edit]
Elections for the office of Oregon State Senate took place in 2010. The primary election was held on May 18, 2010, and the general election was held on November 2, 2010. The candidate filing deadline was March 9, 2010. A total of 16 seats were up for election. Heading into the election, Democrats held an 18-12 majority. Democrats lost two seats in the election, giving them a 16-14 majority.
During the 2010 election, the total value of contributions to the 41 Senate candidates was $9,803,929. The top 10 contributors were:[7]
2008[edit]
Elections for the office of Oregon State Senate consisted of a primary election date on May 20, 2008, and a general election on November 4, 2008. A total of 16 seats were up for election. During the 2008 election, the total contributions to Senate candidates amounted to $3,018,794. The top 10 contributors were:[8]
2006[edit]
Elections for the office of Oregon State Senate consisted of a primary election date on May 16, 2006, and a general election on November 7, 2006. A total of 15 seats were up for election. During the 2006 election, the total value of contributions to the 40 Senate candidates was $7,587,074. The top 10 contributors were:[9]
2004[edit]
Elections for the office of Oregon State Senate consisted of a primary election date on May 18, 2004, and a general election on November 2, 2004. A total of 17 seats were up for election. During the 2004 election, the total value of contributions to the 36 Senate candidates was $7,490,951. The top 10 contributors were:[10]
2002[edit]
Elections for the office of Oregon State Senate consisted of a primary election date on May 21, 2002, and a general election on November 5, 2002. A total of 15 seats were up for election. During the 2002 election, the total value of contributions to the 37 Senate candidates was $6,330,449. The top 10 contributors were:[11]
2000[edit]
Elections for the office of Oregon State Senate consisted of a primary election date on May 16, 2000, and a general election on November 7, 2000. A total of 15 seats were up for election. During the 2000 election, the total value of contributions to the 30 Senate candidates was $5,255,383. The top 10 contributors were:[12]
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If there is a vacancy in the Oregon State Legislature, the board of county commissioners representing the vacant seat must select a replacement. This can only be done when the Legislature is in session or when the vacancy happens more than 61 days before the next scheduled general election.[13] The board must select a person from the political party that last held the vacant seat. The board must consider three to five candidates, nominated by the local county party that last controlled the seat. A replacement must be selected within 30 days of the vacancy. Persons selected to fill vacancies serve until the second Monday in January following the general election.[14]
See sources: Oregon Rev. Stat. §171.051
The state of Oregon has 30 state Senate districts. Each district elects one senator.
Use the interactive map below to find your district.
In Oregon, congressional and state legislative district lines are drawn by the state legislature. District lines are subject to veto by the governor.[15]
If the legislature fails to establish a redistricting plan for state legislative districts, it falls to the secretary of state to draw the boundaries.[15]
State law requires that congressional and state legislative districts meet the following criteria:[15]
Gov. Kate Brown (D) signed new state legislative maps into law on September 27, 2021. The maps were approved by the Oregon House of Representatives, 31-18, and approved in the Oregon State Senate 18-11.[16] These maps took effect for Oregon’s 2022 legislative elections.
Below are the maps in effect before and after the 2020 redistricting cycle.
Click a district to compare boundaries.
Click a district to compare boundaries.
Oregon's population increased by 12 percent from 2000-2010, exceeding the national average of 9.7 percent. Gov. John Kitzhaber (D) signed the state's redistricting plan into law on June 13, 2011, six days after its original proposal. This was the first time Oregon enacted a redistricting plan without the involvement of the Secretary of State in 100 years.
The legislation tracker below displays all legislation that the Oregon State Senate has approved in its most recent legislative session—this includes legislation that has been sent from the Senate to the House 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 21, 2025, and adjourn on June 27, 2025.
| Click [show] for past years' session dates. | |||
|---|---|---|---|
2024[edit]In 2024, the legislature was scheduled to convene on February 5, 2024, and adjourn on March 7, 2024. 2023[edit]In 2023, the legislature was scheduled to convene on January 17, 2023, and adjourn on June 25, 2023. 2022[edit]In 2022, the legislature was scheduled to convene on February 1, 2022, and adjourn on March 4, 2022. 2021[edit]In 2021, the legislature was scheduled to convene on January 21, 2021, and adjourn on June 26, 2021. 2020[edit]In 2020, the legislature was scheduled to convene on February 3, 2020, and adjourn on March 5, 2020. [edit]
Several state legislatures had their sessions impacted as a result of the 2020 coronavirus pandemic. No modifications to state legislative activity in Oregon were made. 2019[edit]In 2019, the legislature was in session from January 22, 2019, through June 30, 2019. 2018[edit]In 2018, the legislature was in session from February 5, 2018, through March 3, 2018. To read about notable events and legislation from this session, click here. 2017[edit]
In 2017, the legislature was in session from February 1, 2017, through July 7, 2017. 2016[edit]
In 2016, the legislature was in session from February 1 through March 3. 2015[edit]
In 2015, the legislature was in session from February 2 through July 6. Major issues in 2015[edit]Major issues in the 2015 legislative session included raising the minimum wage, a transportation package to fix roads and bridges, environmental legislation on the state's low-carbon fuel standard, and funding education.[17] 2014[edit]
In 2014, the legislature was in session from February 3 through March 10. Major issues in 2014[edit]Major issues in the 2014 legislative session included marijuana, gun control, liquor in grocery stores, the environment, health, the budget, Oregon Lottery reform, and the Columbia River Crossing project.[18] 2013[edit]
In 2013, the legislature was in session from February 4 to July 9. Major issues in 2013[edit]Major issues in the 2013 legislative session included in-state tuition, driver's licenses for undocumented immigrants, and background checks for guns.[19][20] 2012[edit]
In 2012, the legislature was in session from February 1 through March 6. 2011[edit]
In 2011, the legislature was in session from February 1 through June 30.[21] 2010[edit]
In 2010, the Legislature did not hold a regular session. However, the Legislature was in special session from February 1st to February 25th.[22] |
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.[23] 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 Oregon Constitution establishes when the Oregon State Legislature, of which the Senate is a part, is to meet. Section 10 of Article IV states that the Legislature will meet in regular session once every two years. The section goes on to establish starting dates for these sessions, but these dates have been changed by law (as the section allows).
Section 10 of Article IV also requires the presiding officers of both legislative houses to convene an emergency session of the Legislature when a majority of the members of each house request an emergency 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 Oregon 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 40 of the 60 members in the Oregon House of Representatives and 20 of the 30 members in the Oregon State Senate. Oregon is one of 36 states that requires a two-thirds vote from both of its legislative chambers to override a veto. |
How can vetoes be overridden after the legislature has adjourned?
| Vetoes can be overridden in a special session or when the next regular session convenes.[24][25] A majority of members in both chambers must agree to call for a special session.[26] |
Authority: Article V, Section 15b of the Oregon Constitution.
| "(1) Every bill which shall have passed the Legislative Assembly shall, before it becomes a law, be presented to the Governor; if the Governor approve, the Governor shall sign it; but if not, the Governor shall return it with written objections to that house in which it shall have originated, which house shall enter the objections at large upon the journal and proceed to reconsider it. (2) If, after such reconsideration, two-thirds of the members present shall agree to pass the bill, 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 a law." |
| Oregon on |
The state operates on a biennial budget cycle. The sequence of key events in the budget process is as follows:[27]
Oregon is one of 44 states in which the governor has line item veto authority.[27][28]
The governor is constitutionally required to submit a balanced budget proposal. Likewise, the legislature is required to pass a balanced budget.[27]
If a legislator is absent from 10 legislative floor sessions without permission or excuse, they are disqualified from holding office for the term following the election after their current term is completed.
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 Oregon State Senate has 13 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 Oregon Constitution can be amended:
The Oregon Constitution lays out four different paths, in two different articles, for how to go about changing the state's constitution.
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