I just quit the Republican party and went with the libertarians. I agree with almost everything that I read at the Cato Instute website, and don't want to be in the same party with Rumsfeld and McCain.
And, both the Democrats and the Republicans have not been living up to their oath of office. Both have been trying to get around the Constitution to further their agendas.
That is your choice. I cannot say anything more. I hope the Libertarian party turns out to be everything you hope for and I am not being sarcastic. I really mean it. Being able to do what you did is what makes our country great! :-)