Bear in mind, voting 3rd party, or simply staying home on election day, will only have the effect of handing the presidency to the Democrats. Again. That's how Bill Clinton won, both times.
If you believe that by doing so, you will be making a statement, or standing on principle, consider where your principle will be when President ClintBama and the Democrat congress begins gun registration and another "assault weapon" ban. By doing so, you will be allowing the Sociocrats to divide and conquer.
If you can't vote FOR the Republican, then for God's sake at least vote AGAINST the Democrat.