Tennessee lawmakers passed a ban Monday against instant runoff voting in elections, a move that seeks to end a long-running legal dispute between state election officials and the city of Memphis. Voters there still haven’t used the method since voting in 2008 to adopt it for city elections. The state House and Senate, where Republicans hold supermajorities, cast votes on the same day for the proposal outlawing instant runoff voting, which is also known as ranked choice voting. Tennessee Elections Coordinator Mark Goins has ruled that the approach isn’t allowed under state law.