I have to admit that neither of the candidates running for President would be my first choice. But, I do believe that Christians should vote, after prayerful consideration.
The way I look at it is that everything we are given, including our right to vote, is ultimately a gift from God, and as with all His gifts to us, I believe He expects us to use that gift, in any way we can, to His glory.
For those of us who are pro-life, Vicki at Windows to my Soul in my blog roll has some recent posts on the subject of abortion that are very interesting.
Pray and then vote. God will take care of the rest.