Then you should have just said so. (friendly grin here) Your first question, which launched my post on worldviews was, "can Christians be liberals." That is a very interesting question but it necessarily provoked a Christian response based on scripture. That's what I thought you were looking for.
The question you were really asking--"can non-Christians be good conservatives" is easy and requires no theology--only empirical evidence. My brother, who is very dear to me, is one of the most solid conservatives you might ever want to meet and a militant agnostic.
As I said in one of my posts, much of the conservative worldview--particularly its beliefs about human nature--is descended from the Christian worldview. That's why, imho, so many conservatives are Christians and vice-versa.
So, do we all hold hands now and sing Kumbayah? Or would Kumbayah be mixing worldviews? :)