Democrats are eyeing a map that could imperil five sitting Republican members, matching the number of seats the Texas GOP is seeking to eliminate.

The Democratic plan — a response to GOP redistricting efforts in Texas — aims to secure 48 of California's 52 U.S. House seats, up from the 43 currently held by the party.

The governor’s new congressional maps would likely make L.A. County bluer, with the biggest changes seen in hard-fought ...