I'd love to see him run against Hillary for the Senate seat but in a way you already told us what is going to happen
you wrote: If Rudy is a good conservative, he will take Hillary's senate seat in '06.
He isn't, so he won't run.
I'm calling it right now, Rudy v. Hillary 2006 will not happen.
Well he shouldn't get a presidential run.
So his best option is to take that Senate seat for the GOP.