Rep. T.W. Shannon held a news conference to announce he will resign as speaker of the House in order to pursue Tom Coburn's U.S. Senate seat.
Oklahoma Gov. Mary Fallin has scheduled a special election to fill the remaining two years of state Sen. Jerry Ellis' term in office.
Three Oklahoma Republicans quickly announced their intentions to run for U.S. House following Rep. James Lankford's announcement that he will run for the Senate.