The measure is an attempt by Democrats to counteract Republican gerrymanders President Trump has sought in red states. If approved, it would change California’s congressional district boundaries to make it easier for Democrats to flip five seats now held by Republicans.

The state’s top elections official Tuesday asked the Trump administration to point to proof that any irregularities exist.

Did Prop. 50 pass in California? Who won the governor race in New Jersey? See results and analysis as Democrats sweep off-year elections.

After sweeping blue victories, California Democrats warn that President Trump may "rig the rules" of elections.

Here’s what to know about voting in today’s election. The Justice Department plans to monitor polling sites in five counties in California, a move that will likely heighten tensions on Election Day and in the days afterward during the vote-counting process.

More than 6.6 million ballots have been returned so far in California’s special election for Proposition 50, according to a data firm used by political campaigns.

Californians are voting on a ballot initiative, "Proposition 50," to determine if the state will adopt a new congressional map that redraws five districts to be more Democratic-leaning, potentially allowing Democrats to flip them in the midterms.

Four races highlight this year's elections: a redistricting referendum in California, governor's races in New Jersey and Virginia and the mayoral contest in New York City.

Democrat Ghazala Hashmi is projected to win the Virginia lieutenant governor's race, becoming the first Muslim women ever elected to statewide office in the country. She defeated Republican John Reid, a conservative talk radio host and founder of the cultural heritage organization The Virginia Council.