Calvert, who currently represents California's 41st Congressional District, announced his campaign​ shortly after California voters passed Proposition 50,​ which shifted five districts to be more favorable to Democrats in the midterm elections this year.

Several candidates across altered congressional districts in California are projected to head to November’s general election. California voters passed Proposition 50, a measure that altered congressional districts in the state,

LOS ANGELES — California voters on Tuesday took the first step in what could become the most consequential House battleground fights in the country, casting ballots in five newly redrawn congressional districts that Democrats view as critical to their effort to reclaim the chamber.

WASHINGTON (AP) — The Supreme Court on Wednesday allowed California to use a new voter-approved congressional map that is favorable to Democrats in this year’s elections, rejecting a last-ditch plea from state Republicans and the Trump administration.

Republican candidates in congressional races throughout California’s redrawn districts still maintain razor-thin margins with all precincts partially reporting on Wednesday afternoon.

The California primaries were supposed to be the first major triumph of younger Democrats' campaign to oust aging House incumbents. That's not how it's shaking out. Why it matters: The old guard is proving they still have some fight,