NEWYou can now listen to Fox News articles! LEESBURG, Va. — Virginians head to the polls on Tuesday to vote on a congressional redistricting referendum that, if passed, could give Democrats a significant boost in the battle for the U.S. House majority in this year’s midterm elections.If the ballot measure is successful, it would give the Democrat-controlled Virginia legislature — rather than the state’s current nonpartisan commission — temporary redistricting power through the 2030 election. It could result in a 10-1 advantage for Democrats in Virginia’s congressional delegation, up from their current 6-5 edge.That would give the Democrats four additional…