Attributed to Voltaire. "The best is the enemy of the good."
Meditation on this truth may help conservatives contain their revulsion at their lousy choices. Obama, who has proven that he is a disaster for the country, got in in part because of conservatives who could not abide McCain. And he may stay in office in part because of disgusted conservatives who fail to heed Voltaire's principle.
Politics is a practical business. It is always about the lesser of evils, except when it is about the least of evils. It is not about being ideologically pure. It is about accomplishing something in a concrete situation in which holding out for the best is tantamount to acquiescing in the bad. Political choices are forced options in roughly William James' sense: he who abstains chooses willy-nilly. Not choosing the better amounts to a choice of the worse.
Don't let the best or the better become the enemy of the good. Try to achieve something achievable. Don't pine after the unattainable. Impossible dreams are for liberals, not reality-anchored conservatives. It did not surprise me when I learned that Ted Kennedy's favorite song was The Impossible Dream. Figures!
Related post: Can What is Impossible to Achieve be an Ideal for us?