Ballot.sol

pragma solidity ^0.4.2;

contract Ballot {

    struct Voter {
        uint weight;
        bool voted;
        Proposal vote;
        address delegate;
    }
    struct Proposal {
        string name;
        string desc;
        uint voteCount;
    }

    address chairperson;
    mapping(address => Voter) voters;
    Proposal[] public proposals;
    
    string public voteName;

    /// Create a new ballot with $(_numProposals) different proposals.
    function Ballot(string votename) {
        chairperson = msg.sender;
        voters[chairperson].weight = 1;
        //proposals.length = _numProposals;
        voteName = votename;
    }
    
    function addProposal(string propsalname, string desc){
        if(msg.sender != chairperson){
            return;
        }
        proposals.push(Proposal({
                name: propsalname,
                desc: desc,
                voteCount: 0
            }));
    }

    /// Give $(voter) the right to vote on this ballot.
    /// May only be called by $(chairperson).
    function giveRightToVote(address voter) {
        if (msg.sender != chairperson || voters[voter].voted) return;
        voters[voter].weight = 1;
    }


    /// Give a single vote to proposal $(proposal).
    function vote(string proposalname) {
        Voter sender = voters[msg.sender];
        if (sender.voted) return;
        bool find = false;
        for(uint i=0;i<proposals.length;i++){
            if(equal(proposals[i].name , proposalname)){
                sender.voted = true;
                sender.vote = proposals[i];
                proposals[i].voteCount += sender.weight;
            }
        }
        return;
    }

    function winningProposal() constant returns (uint8 winningProposal) {
        uint256 winningVoteCount = 0;
        for (uint8 proposal = 0; proposal < proposals.length; proposal++)
            if (proposals[proposal].voteCount > winningVoteCount) {
                winningVoteCount = proposals[proposal].voteCount;
                winningProposal = proposal;
            }
    }
    
    function compare(string _a, string _b) private returns (int) {
        bytes memory a = bytes(_a);
        bytes memory b = bytes(_b);
        uint minLength = a.length;
        if (b.length < minLength) minLength = b.length;
        //@todo unroll the loop into increments of 32 and do full 32 byte comparisons
        for (uint i = 0; i < minLength; i ++)
            if (a[i] < b[i])
                return -1;
            else if (a[i] > b[i])
                return 1;
        if (a.length < b.length)
            return -1;
        else if (a.length > b.length)
            return 1;
        else
            return 0;
    }
    /// @dev Compares two strings and returns true iff they are equal.
    function equal(string _a, string _b) private returns (bool) {
        return compare(_a, _b) == 0;
    }
}

Awesome