If any of those candidates get into contention for the nomination, I'd certainly give them serious consideration. Of course I'll also be keeping one eye on the general election polls. If they stand a good chance of winning the general, fine. If Rudy is the only person standing between us and Hillary, Obama or Edwards, that would be another thing.
Richardson is going to be the dem candidate. He can be dressed up as more conservative than rudy right quick. Bam! All of rudy's appeal goes out the window.