Zell Miller is NOT a Democrat
I'd challenge you to debate him on that. I think you're confusing Democrat and Liberal. In that case, Zell Miller is not a liberal, but he most certainly is a Democrat.
Zell Miller is not a Democrat (even if he claims to be one); if one looks at his voting record, one can see that he is a far right-wing conservative, socially, economically, and foreign policy wise. He once said that if he wasn't so old that he would have switched parties. I just thank goodness that he retired this past year.