WASHINGTON — California voters approved new congressional district boundaries Tuesday, delivering a victory for Democrats in the state-by-state redistricting battle that will help determine which party wins control of the U.S. House in 2026 and, with it, the power to thwart or advance President Donald Trump’s agenda.

The approval of Proposition 50 gives Democrats a shot at winning as many as five additional seats, just enough to blunt Texas Republicans’ move to redraw their own maps to pick up five GOP seats at Trump’s urging. Texas’ move and California’s response have kicked off a flurry of redistricting efforts around the country, with Republican states appearing to have an edge. Deeply blue California is Democrats’ best opportunity to make up seats.

Midterm elections typically punish

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