Three Theories Of Rupert Murdoch's Rick Santorum Endorsement

The News Corp. chief unexpectedly backed Santorum on his wild new Twitter account today. What was that about?

1.

Murdoch is crazy like a fox, and the moment of candor is part of a so-crazy-it-just-might-work rebranding campaign for the embattled mogul.

2.

Murdoch is making a canny personnel play for a reborn Republican star and former Fox News employee, who might even get his own show when this thing is over.

3.

Murdoch is simply being Murdoch -- only now it's all in the public eye, to the mixed amusement and horror of the people around him.