The U.S. Supreme Court will issue full decisions on just seven more calendar days, before going on summer recess. Those dates are May 18, May 26, and all five Mondays in June (1, 8, 15, 22, 29).
Only one election law decision is still pending: Arizona State Legislature v Arizona Independent Redistricting Commission, 13-1314. However, another decision from Arizona may have some impact on election law: Reed v Town of Gilbert, 13-502. That case involves a city ordinance that provides different rules for different types of outdoor signs.