If he wins the nomination (by who knows what behind the scenes machinations), he will lose the election.
I can see Dems crossing over to vote for him in Republican primaries for that precise reason.
His “leadership” that you cite is a couple of instances - giving the sheik his check, and having face time after 9-11. He’s a liberal, and most Republicans just can’t and won’t stomach his leftist positions.
I would never, ever vote for him. The lesser of two evils just ain’t gonna cut it any more.
Regardless of the journey, I think many will arrive at the same destination. Guiliani is not a candidate that any real conserative will embrace.