Oklahoma Redistricting Process

Congressional and Legislative

Congressional and legislative maps are enacted by the State Legislature. The Governor can veto the plans.

The Legislature can override a veto with a two-thirds vote. Republicans currently have veto-proof majorities in both chambers.

Challenges to the maps are litigated in the State Supreme Court.


If the Legislature does not enact a legislative plan within the first ninety legislative days after the convening of the first regular session of the legislature following the census, responsibility for apportioning the legislature is given to a seven-member backup Commission, the Bipartisan Commission on Legislative Apportionment. The Commission consists of the Lieutenant Governor as the nonvoting chair and six other members selected by the Governor, the Oklahoma Senate Majority Leader, and the Oklahoma House Majority Leader, each of whom choose one Republican and one Democrat.

The Bipartisan Commission on Legislative Apportionment submits any redistricting plans in writing to the Secretary of State of Oklahoma and makes them available to the public. The plans must be signed by no less than four of the seven Commissioners.

Challenges to the maps are litigated in the State Supreme Court.

Source: Okla. Const. art. V, §§ 9A-11E.

Previous Redistricting Cycles


  • Congressional
    • Original PlanHB 1002
      • Passed = November 19, 2021 (R-controlled)
      • Signed = November 22, 2021
    • Litigation History
      • None
  • Legislative
    • Original Plans (Based on ACS Data) – HB 1198 (House); SB 1066 (Senate)
      • Passed = May 12, 2021 (R-controlled)
      • Signed = May 13, 2021
    • Revised PlansHB 1001 (House); SB 1 (Senate)
      • Passed = November 19, 2021 (R-controlled)
      • Signed = November 22, 2021
    • Litigation History
      • None


  • Congressional
    • Original PlanHB 1527
      • Passed = May 4, 2011 (R-controlled)
      • Signed = May 10, 2011
    • Litigation History
      • None
  • Legislative
    • Original PlansHB 2145 (House); SB 821 (Senate)
      • Passed = May 16, 2011 (House); May 17, 2011 (Senate) (R-controlled)
      • Signed = May 20, 2011
    • Litigation History
      • Wilson v. Fallin, 262 P.3d 741 (Okla. 2011): Plaintiff, a state Senator, filed a petition with the Oklahoma Supreme Court challenging the constitutionality of the Legislature’s enacted state Senate plan pursuant to the Oklahoma Constitution’s redistricting plan review process. On September 1, 2011, the state Supreme Court ruled that their review of redistricting plans under the state constitution was limited to whether it complies with the population apportionment formula provided therein and upheld the plan as in compliance with that formula.
      • Wilson v. State ex rel. State Election Bd., 270 P.3d 155 (Okla. 2012): The same state Senator again challenged the Legislature’s enacted state Senate plan as unconstitutional, this time in state district court asserting partisan gerrymandering claims. The district court originally granted the defendants’ motion to dismiss the case due to Oklahoma Supreme Court’s already having ruled on the issues, and on January 17, 2012, the state Supreme Court affirmed the dismissal of the case, finding the claims to be barred.


  • Congressional
    • State Court’s Plan (D-controlled Legislature failed to pass plan)
      • Adopted = May 31, 2002
    • Litigation History
      • Alexander v. Taylor, 51 P.3d 1204 (Okla. 2002): After the Democratic-controlled Legislature failed to pass a congressional plan, plaintiffs filed a lawsuit challenging the state’s then-existing congressional plan, passed in 1991, as now unconstitutionally malapportioned and requesting that the court order a new plan be adopted for use in the upcoming 2002 election. The trial court adopted the Governor’s submitted congressional plan on May 31, 2002, and on June 25, 2002, the Oklahoma Supreme Court affirmed the trial court’s adoption of the Governor’s proposed congressional plan.
  • Legislative
    • Original PlansHB 1515 (House); SB 619 (Senate)
      • Passed = May 18, 2001 (House); May 17, 2001 (Senate) (D-controlled)
      • Signed = May 24, 2001 (House); May 23, 2001 (Senate)
    • Litigation History
      • None

Governor Bill Signing

If a bill is presented to the governor during session, the governor has 5 days to sign or veto it; otherwise, it becomes law without signature. If the bill is delivered to the governor during the last 5 days of the session, the governor must sign or veto it within 15 days of session adjournment; otherwise, it is pocket vetoed. Sundays are excluded in these calculations. Line-item vetoes are permitted.

Ballot Measure Process

Kinds of Ballot Measures
Direct initiatives and all referendums are permitted to amend statutes. Direct initiatives are permitted to amend the state constitution. Legislatively initiated ballot measures may amend both statutes and the constitution.

Single-Subject Rule
There is a single-subject rule.

Initiative Subject Restrictions
A subject cannot appear on an initiative if it has appeared on another initiative in the past three years unless they obtain signatures equal to at least 25% of legal voters. Initiatives cannot contain a proposal that the Legislature could not pass legally.

Signature Requirements
The signature requirement for constitutional amendments is 15% of all votes cast for all candidates for governor in the previous general election, 8% for statutory amendments, and 5% for referendums. 1,186,385 people voted for a candidate for governor in the 2018 General Election in Oklahoma, so 177,958 signatures are required for constitutional amendments, 94,911 signatures are required for statutory amendments, and 59,320 signatures are required for referendums.

Submission Deadlines
Referendum petitions must be submitted ninety days after the adjournment of the legislative session in which the measure, which is the subject of the referendum petition, was enacted. Initiative petitions must be submitted no later than 90 days after the start of the circulation period as prescribed by the Secretary of State.

Circulation Period
Petitions can be circulated for 90 days. The Secretary of State determines when the 90 day period begins for initiative petitions.

Ballot Title and Summary
The ballot title and summary are proposed by the Secretary of State, subject to approval by the Attorney General. Proponents may suggest a ballot title and submit it to the Secretary of State. Expedited reviews for titles and summaries are permitted.

Other Requirements
A fiscal impact statement is not required. There are no supermajority requirements. The Legislature can repeal a statutory initiative through a majority vote. The Legislature can amend or repeal an amendment by sending it to voters through a majority vote of each chamber of the Legislature. Initiatives are permitted on general, primary, and special election ballots, but not on odd-year ballots.

Source: Okla. Const. art. V. Okla. Statutes, tit. 34 (2019). Oklahoma Secretary of State Website

Active Ballot Measures
  • Oklahoma Initiative Petition 430 (State Question 815) (2022)
    • Status - Withdrawn
    • Summary - This citizen initiative would give responsibility for legislative and congressional redistricting to a redistricting commission. The state legislature would no longer have the authority to draw legislative and congressional maps. Two lawsuits were filed on September 1, 2020, against proponents Andrew Moore and Janet Ann Largent in the Supreme Court of Oklahoma challenging the constitutionality and the gist of the Petition. Proponents announced plans to withdraw the petition on September 22, 2020.

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