California Democrats are watching Tuesday's primary to see if redrawn congressional maps yield five new House seats. Key races include the 48th District in San Diego, where nine Democrats risk splitting the vote, and the Central Valley's 22nd District, where Republican Rep.
David Valadao faces a Democratic-leaning map. In San Francisco, the race to replace Nancy Pelosi highlights a progressive-moderate divide.
The results will test the party's strategy against GOP redistricting in Texas.