(Reuters) - The U.S. Supreme Court last March rebuffed an emergency request by North Carolina Republicans to allow the use in November's congressional elections of an electoral map they drew that a lower court invalidated for unlawfully disadvantaging Democrats. It was a short-term setback for the North Carolina Republicans, but they soon will get a chance to claim a bigger legal victory. Conservative Justice Brett Kavanaugh suggested at the time that the justices take up the underlying ...