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|Oklahoma State Legislature|
|12 year cumulative total, in either or both chambers|
New session started
|February 6, 2017|
Majority Floor Leader
Length of term
|Authority||Article V, Oklahoma Constitution|
|Salary||$38,400/year + $153 per diem + $10,000 bonus=($58,804)|
November 8, 2016|
November 6, 2018|
State Senate Chamber|
Oklahoma State Capitol
Oklahoma City, Oklahoma
|Oklahoma State Senate|
|This article is part of a series on the|
politics and government of
The Oklahoma Senate is the upper house of the two houses of the Legislature of Oklahoma, the other being the Oklahoma House of Representatives. The total number of senators is set at 48 by the Oklahoma Constitution. 
Senators approve or reject gubernatorial appointments, and contribute to the creation of both state law and an annual state budget. Every ten years, they aid in drawing new boundaries for Oklahoma's electoral districts. The Oklahoma Senate also serves as a court of impeachment.
The presiding officer of the Senate is the Lieutenant Governor of Oklahoma, who is the President of the Senate. Since the 1960s, the President Pro Tempore of the Senate has presided over daily work. Prior to that time, the President of the Senate took a leading role in the Senate, including appointing committees and members to those committees. The President of the Senate may cast a vote only in the instance of a tie vote and may not vote to create a tie.
- 1 History
- 2 Powers and process
- 3 Party composition
- 4 Membership
- 5 Past composition of the Senate
- 6 See also
- 7 References
- 8 External links
The 1907 Oklahoma Constitution established the Oklahoma Senate alongside the Oklahoma House of Representatives. It met in Guthrie, Oklahoma until 1910.  Henry S. Johnston, the author of the initiative and referendum section of the Oklahoma Constitution, served as the first Senate President Pro Tempore. 
After women in Oklahoma earned the right to vote in 1918, the Oklahoma Senate gained its first female state senator. Lamar Looney was elected in 1920 over a male incumbent, G. L. Wilson. Looney was a progressive Democrat and served from 1921 to 1929. 
The United States Supreme Court "one man, one vote" decision in Baker v. Carr (1962) led to a court order that forced Oklahoma to equalize representation.  Before that decision, Oklahoma had 48 senatorial districts that represented either a populous county or several less-populated counties, but did not provide for districts of equal population.
Since 1964, under the holding of Reynolds v. Sims, 377 U.S. 533 (1964) districts must be apportioned within a 5% margin of the average target size district as determined by the U.S. Census state population figures divided by the forty-eight districts. This allows for some districts to be slightly smaller or larger than others. The Oklahoma Senate draws its own maps of its district lines, which are subject to the approval of both the Oklahoma House of Representatives and the governor. Should the redistricting not occur in a timely manner, the lines are determined by a panel of five statewide elected officials.
In 1966, voters approved 90-day legislative sessions and, in 1968, they voted to create a Board of Legislative Compensation. 
The November 7, 2006 elections resulted in an unprecedented 24-24 tie in the number of seats held by Oklahoma's two major political parties, the Republican Party and the Democratic Party.  Although the Republican Party added two seats to their prior total,  they had lost a seat in July due to Nancy Riley changing in her party affiliation from Republican to Democratic.  The Democratic Party did hold the seat of lieutenant governor, who also serves as President of the Senate, giving them a tie-breaking vote in the Senate. 
The result was a power-sharing agreement for the 2007 and 2008 legislative sessions that split control of the presiding officer position of President Pro Tempore into two Co-President Pro Tempores, one of each party. Officially, a Democratic member held the President Pro Tempore position for 23 months and a Republican member held the position for only one month.  Unofficially, decisions were made with the approval of both Co-President Pro Tempores.
By winning two more seats in the 2008 elections, the Republicans assumed control of the Oklahoma Senate for the first time in state history and held a 26-22 majority, thus ending the power sharing arrangement between the parties.
The Senate meets in regular session in east wing of the Oklahoma State Capitol in Oklahoma City, from early February to the last Friday in May.  Special sessions may be called by the Governor of Oklahoma, or by supermajority vote of the Legislature. Unlike their counterparts in the Oklahoma House of Representatives, state senators are not restricted on introduction of bills and resolutions.
The Oklahoma Senate advises and consents to numerous appointments of the Governor, including the entire Governor's Cabinet. Nominations are heard by respective standing committees rather than through a committee on nominations.
Originally, the Oklahoma Constitution-based the Senate on counties. The 19 most populous counties, as determined by the most recent federal census, were each to elect one senator. The 58 less populous counties were to be joined into 29 two-county districts, each of which was to elect one senator. In apportioning the Senate, the Oklahoma Constitution required that consideration be given to population, compactness, area, political units, historical precedents, economic and political interests, contiguous territory and other major factors, to the extent feasible.
In 1964, the United States Supreme Court ruled this method violated the federal Constitution. Since then, every ten years, the Oklahoma Senate is responsible for passing into law new district boundaries for the Oklahoma House of Representatives, Oklahoma Senate and Oklahoma Congressional delegation. The Senate and House have traditionally drawn their own lines without any comment from the other body and work together with the Congressional delegation to draw lines appropriate for the next election. The Governor must sign these bills into law or a statewide panel is convened to draw the disputed lines.
The Oklahoma Senate serves a dual role as both a legislative body and as a judicial court. As the court of impeachment, it is an independent court in the Oklahoma court system. Impeachment charges are brought by the Oklahoma House of Representatives, but heard by the court of impeachment, with Oklahoma's chief justice presiding over the court. If the chief justice or a member of the Oklahoma Supreme Court is charged with impeachment, a state senator can preside over the court of impeachment.
Impeachment charges may only be brought against the governor, other statewide elected state officials and justices of the Oklahoma Supreme Court for willful neglect of duty, corruption in office, habitual drunkenness, incompetency, or any offense involving moral turpitude committed while in office. Impeached officials are immediately suspended in discharging their duties. Should the impeachment fail, the official returns to their duties. If the impeachment is successful and the defendant found guilty, the official is removed from office.
(Shading indicates majority caucus)
|50th legislature (2005-2007)||22||26||48||0|
|51st legislature (2007-2009)||24||24||48||0|
|52nd legislature (2009-2011)||26||22||48||0|
|53rd legislature (2011-2013)||32||16||48||0|
|54th legislature (2013-2015)||36||12||48||0|
|Begin 55th legislature (2015)||40||8||48||0|
|End 55th legislature||39||9|
|Begin 56th legislature (2017-2019)||42||6||48||0|
|March 22, 2017 ||41||47||1|
|April 27, 2017 ||40||46||2|
|April 27, 2017 ||39||45||3|
|July 11, 2017 ||7||46||2|
|September 12, 2017 ||38||45||3|
|November 14, 2017  ||39||8||47||1|
|February 26, 2018 ||40||48||0|
|Latest voting share||83.33%||16.67%|
In order to file for election to the Senate, candidates must be twenty-five years of age at the time of their election.  The candidate must also be a qualified elector in their respective counties or districts and shall reside in their respective counties or districts during their term of office.  No person is eligible to serve as a member of the Legislature if they are serving as an officer of the United States or State government. Furthermore, any person who has been adjudged guilty of a felony is not eligible to election to the Legislature. If a member of the Senate is expelled for corruption, they are not eligible to return to the Legislature.
The senators are elected to four year terms on alternating cycles.  The odd senatorial districts are elected in the same cycle of every presidential election year (years divisible by four, e.g., 2012, 2016); the even numbered senatorial districts are elected during the gubernatorial election year (even-numbered years not divisible by four, e.g., 2010, 2014).
Senators serve a four-year term and are limited to three terms or 12 years. A term limited member can not run for election to the House of Representative as both Representative terms and Senate terms are added together in determining the total number of Legislative years in office.  When term limits were implemented in 1992, they were not applied retroactively which meant that senators elected prior to their implementation could serve up to three full terms following the implementation of term limits. For example, the longest-serving member of the Oklahoma State Senate, Gene Stipe was first elected in 1956, but would not have been term limited out until 2004, had he not resigned the previous year. 
The majority of Oklahoma legislators receive $38,400 in annual pay while presiding officers earn a larger salary. Additionally, legislators can seek reimbursement for expenses related to meals and lodging during the legislative session, and for certain travel expenses related to their duties at any point during the year. They also have access to benefits received by state employees, including health and life insurance as well as retirement savings plans.
The Lieutenant Governor serves as President of the Oklahoma Senate, but only casts a vote in the case of a tie and presides less frequently since the 1960s. The President Pro Tempore is the one who serves as leader of the Senate and is the head of the majority party. The President Pro Tempore appoints the majority floor leader and the chair of the appropriations committee. Along with the elected officers of the majority caucus (caucus chair, caucus vice chair, three assistant majority leaders and four majority whips), they comprise the leadership of the Senate majority caucus. The leader of the minority caucus is called either the Republican Leader or Democratic Leader, depending on which party is in the minority. Along with the elected officers of the minority party (assistant leaders, assistant whips and the caucus chair and vice chair), they comprise the Senate minority leadership team.
Todd Lamb, the current Lieutenant Governor of Oklahoma and President of the Oklahoma Senate, previously served as a state senator. A number of Oklahoma governors also served in the Oklahoma Senate, including Brad Henry, Raymond D. Gary, William J. Holloway and Henry S. Johnston. Former Congressmen John Jarman and Clem McSpadden both served in the Oklahoma Senate. Harry J. W. Belvin longest serving Principal Chief of the Choctaw Nation (In 1948 the Secretary of Interior appointed Harry Belvin as the chief of the Choctaw tribe, along with chiefs of the other four tribes in eastern Oklahoma. ) served as both an Oklahoma Senator and Member of the Oklahoma House of Representatives. Scott Pruitt, the controversial former EPA Administrator who faced several investigations into his conflicts of interest and management behavior (including excessive spending), had served previously as Oklahoma Attorney General and a member of the Oklahoma Senate.
- Section V-9A: Senatorial districts - Tenure, Constitution of the State of Oklahoma at Oklahoma Public Legal Research System (accessed August 1, 2018)
- Farmer, Rick. "Legislature," Encyclopedia of Oklahoma History and Culture. http://digital.library.okstate.edu/encyclopedia/entries/L/LE010.html (accessed April 16, 2013)
- Burke, Bob. Johnston, Henry Simpson Archived 2013-07-05 at WebCite Encyclopedia of Oklahoma History and Culture (accessed May 9, 2013)
- Pappas, Christine. Looney, Lamar (1871-1935), Encyclopedia of Oklahoma History and Culture (accessed May 9, 2013)
- Agnew, Brad. Twentieth-Century Oklahoma, Encyclopedia of Oklahoma History and Culture (accessed May 10, 2013)
- A Century to Remember Archived 2012-09-10 at the Wayback Machine., Ok.gov (accessed April 30, 2013)
- Krehbiel, Randy. GOP victories create a tie in state Senate, Tulsa World, November 8, 2006 (accessed May 14, 2013)
- Hoberock, Barbara and Mick Hinton. "Senator bolts abhorrent GOP", Tulsa World (accessed May 14, 2013)
- Hoberock, Barbara. "Senate's power-sharing accord carries a cost", Tulsa World, July 12, 2007 (accessed May 14, 2013)
- Sen. Ralph Shortey (R-44) resigns amid legal issues 
- Sen. Kyle Loveless (R-45) resigns amid legal issues 
- Sen. Dan Newberry (R-37) resigns to purse private sector employment 
- Democrat Michael Brooks-Jimenez elected to succeed Sen. Ralph Shortey (R-44) 
- Sen. Bryce Marlatt (R-27) resigns amid legal issues 
- Democrat Allison Ikley-Freeman elected to succeed Sen. Dan Newberry (R-37) 
- Republican Paul Rosino elected to succeed Sen. Kyle Loveless (R-45) 
- Republican Casey Murdock elected to replace Sen. Kyle Loveless (R-27), February 13, 2018. Sworn in February 26.  
- Section V-17: Qualified electors, Constitution of the State of Oklahoma at Oklahoma Public Legal Research System (accessed May 3, 2010)
- Section V-17A: Limitation of time served in the Legislature, Oklahoma Constitution Online (accessed May 23, 2013)
- Continuing Coverage of Gene Stipe (NewsOK.com) Archived 2007-12-08 at the Wayback Machine.