Of course, how could CBS resist a two-fer: bashing Guiliani (by a conservative) AND rehabilitating Bill CLinton. Of course, Huckabee's premise is 100% wrong, since as far as I know Clinton was not impeached for his sexual behavior, but for LYING.
I think Huckabee has made a big error here. I imagine it is because some in the Southern Baptist Church are making anti-Guiliani noise and citing his divorces.
As I said, I am not supporting anyone, but I think that most Americans aren't very comfortable with attacks on someone's personal life unless it involves actual criminal behavior. Clinton didn't seem to be hurt one bit (of course he has no shame, so maybe that's why).
As far as I know, Giuliani has never been accused of raping anyone. And Clinton has not stayed in his marriage because of his high regard for the institution. Huckabee sounds silly.