No one.
If not for Dan Savage he'd have a much betterworse chance.
In American politics, an attack perceives as a "low-blow" like Savage's would probably help Santorum if he were actually relevent to begin with becuase it makes him look like the victim instead of the tyrant. Everyone loves a victim and no one loves a tyrant. Santorum's problem is that he lacks a good niche in the base. He's fired up about all the wrong issues for political convenience and has a view on foreign policy that went out of style five years ago. He also has a penchant for making himself sound more extreme than he really is when a good politician always appears more moderate than he really is.
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