How the scramble to redraw congressional maps impacts the battle for the US House

As they look ahead to next year's fight to control Congress in the midterms, Republicans and Democrats are scrambling across the country to revisit the congressional district lines that will shape political battles ahead. Redistricting is usually performed only once a decade after the release of data from the U.S. Census. Texas Republicans, at the urging of President Donald Trump, passed a new map in August packing together Democratic voters in major urban and suburban areas and drawing new borders around Democratic seats to include more Texans who voted for Trump last year. It set off a scramble capped by Tuesday’s ballot proposition in California, which would give Democrats a chance to pull even with new pickup opportunities, as both parties explore redrawing maps in states where they co