Rep. Ken Calvert defeats fellow Republican Rep. Young Kim in SoCal congressional race

Republican Ken Calvert won election Monday to the U.S. House of Representatives representing California's 40th Congressional District, defeating Republican incumbent Young Kim.

The race presented a rare general election contest between two incumbents of the same party.

Kim and Calvert ended up in the same district when California voters last year approved new congressional boundaries that favor Democrats.

They fought over their MAGA bona fides and loyalty to the president. Calvert is the longest-serving Republican in California's House delegation.

The Associated Press declared Calvert the winner at 9:31 p.m. EST.