Virginia's Supreme Court is considering whether a voter-approved redistricting amendment complied with the state's constitutional requirements. A Republican challenge to the map contends that the Democratic-led General Assembly violated procedural requirements by placing the constitutional amendment before voters to authorize mid-decade redistricting. On Monday, arguments before the court focused on whether the legislature's initial vote happened before last fall's election, since early voting was already underway. If the court agrees that lawmakers broke the rules, it could invalidate the amendment and render last week’s statewide vote meaningless. Democrats hope to win as many as four additional U.S. House seats under the new Virginia map.