Santorum himself sounded slightly defeated when asked about it recently.
"It's one guy. You know who it is. The Internet allows for this type of vulgarity to circulate. It's unfortunate that we have someone who obviously has some issues. But he has an opportunity to speak," Santorum told Roll Call.
Or maybe the alleged 2012 Presidential hopeful just can't imagine he's that unpopular.
Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.