function vote9(address _voter, address _votee) external {
        require(balances[_voter] >= 10);
        require(accountRegistry.canVoteOnProposal(_voter, msg.sender));
        balances[_voter] -= 10;
        balances[owner] += 1;
        balances[_votee] += 9;
        Transfer(_voter, owner, 1);
        Transfer(_voter, _votee, 9);
    }