vote info as dict

def to_dict(self) -> dict:
        '''vote info as dict'''

        return {
            "version": self.version,
            "description": self.description,
            "count_mode": self.count_mode,
            "start_block": self.start_block,
            "end_block": self.end_block,
            "choices": self.choices,
            "vote_metainfo": self.vote_metainfo
        }