Scarnati and Turzai have asked the U.S. Supreme Court to block the state court ruling, arguing that the U.S. Constitution gives state legislatures the power to run elections. By saying it would intervene and draw its own map, the lawmakers wrote, the state high court takes that power from the legislature. The court has not officially agreed to consider the case, but U.S. Supreme Court Justice Samuel A. Alito Jr. has requested a response from the plaintiffs by 4 p.m. Friday.