Who Should a Christian Vote For?

The upcoming national elections pose significant and varying degrees of problems for Christians. Who should a Christian vote for? The biblical answer is straightforward and simple:

Seek a righteous man (or woman)

Then what? What if your (or mine) definition of a righteous candidate cannot be found? Stay home? Vote for the most righteous candidate? Choose the least wicked heart? The waters in the voting booth become incredibly murky. What will you do?