Why I'm Not a Christian Anarchist

This afternoon Steve sent me this article. It's a blog posting by a Christian anarchist entitled "Ten Reasons Why I'm Not Voting for President." Basically, the author outlines the reasons why he does not vote and, I'm assuming, why other Christians should also abstain from voting.
For those of you that know me well, you know that I have certain soapboxes and the responsibility of all Americans (especially Christians) to vote is definitely one of them. Therefore, just from skimming the article, I could tell my initial response would be some degree of anger/annoyance.
After reading the article more carefully, I had to concede that Mark has some very valid points. His most valid point, in my opinion, is that Christians should be more involved in bringing positive change to our world. We should not depend solely on government agencies to feed the homeless, provide for the poor, and counsel those in emotional need.
I also cannot argue that at times voting seems like choosing between the lesser of two evils. Watching the current presidental debates, I am more convinced than ever that no candidate will fully support the all the agendas that I believe are necessary to bring about the most positive outcome for humanity at the present. Mark's answer to this would be to not vote at all. To take a stand by not voting.
Assume for a moment that all Christians suddenly realize that Mark is correct and, as a consequence, do not vote in the upcoming presidental election. As Christians, we tell America that we are members of a different "government" and do not wish to participate politically in this one. Is this going to cause a positive change in America? Yes, it is a revolutionary stance and would catch the attention of many people, but would it do the country more evil or good? Will Americans respond to this as an act of love on the part of the Christians or will they feel like Christians just gave them the middle finger/don't really care about them?
Ultimately, as Christians we are called to be in the world but not of the world. It is true that we are citizens of a Heavenly kingdom that is already a reality, but we are not gone from this world yet. We are left here, for the moment, to do God's will on earth (and America). I truly believe that part of God's will for every Christian is to exert a positive influence on all spheres of life that He has put under our control. As Americans, one of our spheres of influence is the American political system. We are uniquely positioned to make our voices heard in the most powerful country in the world. We can vote for the candidate that aligns most closely with what we believe to be in the best interest of America and then protest for the changes that the government needs to make later.
With that said, the Church needs to step up to the plate and start doing what Jesus commanded us to do. We should not put our complete faith in American Democracy to make the changes that we would like to see. The government is part of a fallen world. Christians should vote in order to help influence positive choices, but they should also roll up their sleeves and address the needs of our fellow Americans (and humanity in general) in an active manner.