Election law attorney Burton Odelson says any challenge could ultimately reach the Illinois Supreme Court and help determine how far Illinois home rule powers extend. A petition drive in Aurora could become the next major legal battle over whether Illinois cities have the authority to let voters recall their own elected leaders. Odelson, who has practiced Illinois election and municipal law for decades, said challengers generally have two ways to attack referendum petitions. Illinois law currently provides a mechanism for recalling a governor, but not mayors or other municipal elected officials. The mayor argues Illinois already has legal procedures to remove elected officials who become ineligible to hold office or violate the law, making a recall process unnecessary.