Backed by Abigail Spanberger, the measure could boost Democrats and counter Donald Trump’s redistricting push

Virginia voters will decide on Tuesday whether to adopt new congressional maps that could help Democrats win control of the House of Representatives and scuttle Donald Trump’s effort to use mid-decade redistricting to preserve Republican control of Congress.

Polls show the referendum to redraw the maps has only a narrow lead in a state that Kamala Harris won two years ago. The issue appears to have engaged many voters, with nearly more than 1.37m ballots cast in early voting.