Representative Ken Calvert defeated Representative Young Kim in California's 40th Congressional District. The rare contest happened after redistricting forced the two Republicans to run against each other. Mr. Calvert won the seat in this Southern California stronghold, ending Ms. Kim’s time representing the area, which she held since 2018.

After redistricting, Mr. Calvert ended up running against and defeating Representative Young Kim.

Representative Ken Calvert defeated another Republican incumbent, Representative Young Kim, in California's 40th Congressional District in a rare intraparty contest, according to The Associated Press.

The Southern California district, which includes parts of Riverside and Orange Counties, is one of the state's last Republican strongholds. Ms. Kim had represented the district since 2018. Mr. Calvert ended up running against her after his former district, which encompassed much of Riverside County, including Palm Springs, was carved up and distributed among several neighboring districts.

During the nonpartisan primary, Mr. Calvert and Ms. Kim attacked each other as insufficiently supportive of President Trump's agenda. But the tone shifted this fall as both candidates portrayed themselves as pragmatic, "common sense" politicians, distancing themselves from Mr. Trump.

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