Oklahoma will elect its five members of congress, as well as a rare race in which two U.S. Senate seats are up for election. Sen. Lankford is running for re-election, while a special election to fill the seat held by Sen. Jim Inhofe for the four years remaining in the term following his resignation at the conclusion of this congress will also be decided. Oklahomans will also vote for governor.
Polls close in the state at 7 p.m. local time, or 8 p.m. EST.