class Vote:
    def __init__(self, voter, vote):
        self._voter = voter
        self._vote = vote

    @property
    def voter(self):
        return self._voter

    @voter.setter
    def voter(self, value):
        self._voter = value

    @property
    def vote(self):
        return self._vote

    @vote.setter
    def vote(self, value):
        self._vote = value

    def to_string(self):
        pass