Yes, God does tell us who to vote for.

Christians cannot vote for pagans, Mormons, or any ungodly to rule over them. "Moreover thou shalt provide out of all the people able men, such as fear God, men of truth, hating covetousness; and place such over them, to be rulers of thousands, and rulers of hundreds, rulers of fifties, and rulers of tens." (Exodus 18:21)

http://www.theamericanview.com/index.php?id=693