Talk politics.

I've believed for many years that the solution we need is Instant Run-off Voting. Instead of voting for one of say, five candidates, you rank your preferences in order. So, if I preferred the Green candidate (let's pretend for this exercise that it's not Roseanne Barr!) but could live with Obama, I'd rank Green first, Democrat second. Votes are tallied up so that the candidate with the most points wins. You can read more about it here: http://www.fairvote.org/instant-runoff-voting#.T0uq2IEqnvY