This is a topic that comes up frequently during election times. I would rather address it outside of such emotional times. I've done a bit of research on others opinions and found some excellent commentary about it. Christianity and the lesser of two evils. There are a lot of good arguments made for not voting at all.
I find these diatribes to be short sighted. If you are a praying-and-listening-to-God-Christian, you will get the answer over who to vote for. If you are a woman, that answer is to vote with your husband or father. You don't even need to pray about it. It's written right there in the Bible. If you are a man, you should be in the habit of praying about decisions in your life and trusting the Holy Spirit's guidance. If you aren't accustomed to this habit, it is a great time to start.
I voted for Romney but not McCain. Despite his cult worship, I was convinced Romney would drill for oil and help our country reestablish our preeminence throughout the world. Lately, we have been finding out that the US's oil drilling is continuing despite our current leader's desire to stop it and OPEC is scared.
Reading the Bible you understand that God puts in place those that rule our countries. It also applies in democracies. There are plenty of little situations that could happen to upend a campaign that God could make happen but doesn't. It is quite an interesting philosophical dilemma. The question then could be why bother voting or concerning yourself at all. Obviously, a country that has a large amount of voters praying to God for guidance about who to vote for is going to be more successful than one in open defiance to God. The importance of the election season is about whether or not we the people are praying for guidance. I still pray for our leaders despite the fact I haven't voted for the vast majority of them. Paul was struck blind in the midst of rejecting Christ, so there is hope for all.