James Lankford, Madison Horn Competing For Senate Seat

Incumbent Republican James Lankford is defending his U.S. Senate seat from his challenger, Democrat Madison Horn.

Lankford has served as one of Oklahoma's senators since 2014, and before that was a U.S. representative since 2011.

Horn won the most votes in the Democratic primary in June, and successfully defeated fellow Democrat Jason Bollinger in the runoff in August.