At least 34 states need to pass similar legislation to convene a constitutional convention. So far, 27 states have passed bills since 1957 to discuss a balanced budget amendment that would prevent the federal government from running annual budget deficits. To secure the remaining seven states necessary for a convention, the ALEC-connected Balanced Budget Amendment Task Force plans to lobby in 13 more states in 2016. Not pictured on this map, states have also passed legislation to hold conventions focused on different topics, such as establishing term limits for congressmen or overturning the U.S. Supreme Court’s Citizens United ruling. Those amendments don't yet have as much backing, but critics fear they could be brought up if a convention actually occurred.