Are all economists conservative?

Greg Mankiw has an interesting post based on a letter that he got from an economics student. My wife thinks that I tend support republican or conservative ideas, and she is a liberal a.k.a democrat. However, neither of us align with these parties. What I am able to decipher based on reading the post from Greg is why I tend to be more conservative in my thinking than most people that I speak to. I think if there is one quote that I really like is "I know what is best for me and my family, no government or union or trade association can decide that for me". I think it was Milton Friedman who said that... there is more and more evidence supporting the theories put forth by these economists.