Alexander Burns:
Mitt Romney’s campaign and super PAC are absolutely swamping Rick Santorum on the air in Wisconsin, outspending him at a rate of about 55 to 1.
If past is prologue, virtually every dime Mitt Romney spends will be on negative attack ads against Santorum. Overall, he's got a bit more than $3 million on his side, most of it coming from his Super PAC. Rick Santorum, meanwhile, is responding with $55,000.
In light of the fact that Mitt Romney's campaign is saying that Rick Santorum has already "lost," all this spending raises a question: if Rick Santorum truly has lost ... why is Mitt Romney still trying to beat him?