Republican U.S. Rep. James Lankford is seeking a second term in Oklahoma's 5th Congressional District seat in the Nov. 6 general election.
But a Democratic candidate and two independent challengers for the position say they hope to spoil Lankford's plans.
Lankford was the only member of Oklahoma's U.S. House delegation who did not draw a primary challenger for re-election. But he faces Democrat Tom Guild and independents Pat Martin and Robert Murphy in the general election.
Lankford was a political newcomer when he emerged from a crowded Republican primary field in 2010 and won the GOP nomination in a runoff. Guild unsuccessfully sought the Democratic nomination for the seat two years ago.
Oklahoma's 5th Congressional District includes nearly all of Oklahoma County as well as Pottawatomie and Seminole counties.