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California’s Prop 50 Map and Top‑Two Primary Produce New November Congressional Matchups

The redrawn districts and the jungle primary have set several fall contests that change incumbent plans and could shift the balance of competitive seats in November.

Rep. Jared Huffman meets with tribal leaders in his newly redrawn district in Burney on Jan. 27, 2026. Prop 50 expanded Huffman's district to include much of the upper northeastern portions of the state.
People arrive to drop off their election ballots or vote during the California primary election in San Diego, California, U.S., June 2, 2026. REUTERS/Mike Blake/File Photo
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Prop 50 radically redrew Rep. Kevin Kiley's previous congressional district. He's now running in the 6th District, and will face Democrat Richard Pan.

Overview

  • The June 2 top‑two primary, with mail ballots counted over the following week, produced final projections by June 9–10 that set many November pairings across California under the new Prop 50 map.
  • Independent Rep. Kevin Kiley, who left the GOP this year and says he will continue to caucus with Republicans, was projected to top the primary in the redrawn 6th District and will face Democrat Richard Pan in November.
  • In the redrawn 40th District two Republican incumbents, Ken Calvert and Young Kim, advanced to a head‑to‑head general election, a result the jungle primary can produce when candidates of the same party finish first and second.
  • Central Valley incumbent David Valadao was projected to advance in the 22nd District while Democrats Randy Villegas and Jasmeet Bains remained close in a contest that reflects progressive‑versus‑moderate tensions within the party.
  • Proposition 50 was designed to create more Democratic‑leaning seats and has already forced incumbents to change districts or party plans; the next developments to watch are remaining vote counts, how campaigns adapt to new matchups, and whether the redraw flips any November seats.