Returns the unique divisions for all elections on an election day.

def fetch_states(self, elections):
        """
        Returns the unique divisions for all elections on an election day.
        """
        states = []

        for election in elections:
            if election.division.level.name == DivisionLevel.DISTRICT:
                division = election.division.parent
            else:
                division = election.division

            states.append(division)

        return sorted(list(set(states)), key=lambda s: s.label)