Oklahomans who plan to vote in the June 26 primary election must register by June 1.

Those who aren't registered or need to change their registration may apply by filling out and mailing an Oklahoma Voter Registration Application form in time for it to be postmarked no later than midnight May 31, according to a news release.

June 20 is the deadline to request an absentee ballot for the primary election. Early voting begins June 21.

Topping the ballot will be primary elections for the Democratic and Republican nominations for governor. Runoffs, if necessary, will be Aug. 28, and the nominees will face each other in the Nov. 6 general election to determine who will succeed term-limited Republican Gov. Mary Fallin.

Elections for Congress, the Oklahoma Legislature and a statewide referendum on whether to authorize medical marijuana will also be on the primary election ballot.

In LeFlore County, Oklahoma Voter Registration Application forms are available at most post offices, tag agencies and public libraries, as well as at the LeFlore County Election Board at 103 N. Church St. in Poteau. Applications also are available at elections.ok.gov.