Katherine Moore Porter is an American politician and lawyer who served from 2019 to 2025 as a U.S. representative from California. She was elected as part of a Democratic wave in Orange County, flipping the 45th district. In 2022, after redistricting, she was reelected in the 47th congressional district. In 2023, Porter announced her candidacy for the U.S. Senate, forgoing reelection to the House of Representatives. She was defeated after failing to advance from the nonpartisan primary won by Adam Schiff and Steve Garvey.
