Former U.S. Rep. Kendra Horn, a moderate Democrat who pulled off one of the biggest political upsets in the 2018 midterm elections, announced Tuesday she's joining the race for Oklahoma's soon-to-be vacant U.S. Senate seat.
Horn, 45, is jumping into an increasingly crowded field seeking the post held for more than 25 years by Republican U.S. Sen. Jim Inhofe, who announced last month he plans to step down.
