Why? Well it could be that he is FAR AND AWAY the most intelligent, articulate, and best leader on the horizon. The nomination will be extremely difficult to keep away from Rudy.
Those appalled by the prospect throw up names they prefer who do not have the slightest chance of getting nominated.
It is laughable to see the alternatives or sad depending on the viewpoint.
Squeaky clean is just as necessary as good leadership skills when the nominee is a dreadful Republican.