Republicans have regained the advantage in the national mid-decade redistricting battle after the Virginia Supreme Court struck down a map that sought to grow the Democratic majority in the state House. Under the redrawn map proposed by Virginia Gov. Abigail Spanberger and her fellow Democrats in the state Legislature, Republicans were projected to lose up to four U.S. House seats in the upcoming midterms—a development that would have placed Democrats ahead in the national fight. Following approval of the map on April 22, Republicans took the fight against the redistricting effort to court. The state Supreme Court agreed with the Republican critics of the measure, ruling that the Democrat-majority General Assembly failed to follow constitutional procedures when advancing the measure....