I feel like I need a shower now.
Mitt will never get my vote.
So, to be clear, for all practical purposes you are supporting Obama's re-election (presumably so that you will feel good about not compromising your principles).
But understand you will still compromise your principles -- to a far worse outcome -- by voting for anyone other than the Republican Party nominee (or by not voting, for that matter), thereby helping a socialist hellbent on destoying the American Republic to remain in power. That's what this boils down to in the end, my friend.