Waits 5 seconds as that is the required amount 
        of time between votes.

def vote(self, identifier, weight=100.0):
        ''' Waits 5 seconds as that is the required amount 
        of time between votes.
        '''
        for num_of_retries in range(default.max_retry):
            try:
                self.steem_instance().vote(identifier, 
                    weight, self.mainaccount)
                self.msg.message("voted for " + identifier)
                time.sleep(5)
            except Exception as e:
                if re.search(r'You have already voted in a similar way', str(e)):
                    self.msg.error_message('''Already voted on 
                                        {}'''.format(identifier))
                    return "already voted"
                else:
                    self.util.retry('''COULD NOT VOTE ON 
                                    {}'''.format(identifier), 
                                    e, num_of_retries, default.wait_time)
                    self.s = None
            else:
                return True