If you take a look at the big picture, the Republican Party establishment views a Rick Santorum victory in Mitt Romney’s home state of Michigan as a disaster.
In fact, ABC’s The Note reports that some GOP leaders believe that even if Romney loses here but goes on to win the nomination he will be permanently damaged heading into the fall general election.

(Joe Raedle/Getty Images)
A prominent Republican senator told Jonathan Karl of ABC that he will call for someone new to get into the race if Romney falters in the state where he grew up.
 “If Romney cannot win Michigan, we need a new candidate,” said the senator, who has not endorsed anyone and requested anonymity.
If Romney recovers from a Michigan loss and wins the GOP nod, what would happen in the fall? “We’d get killed,” was this senator’s response to Karl.
And if Santorum gains enough momentum from a Michigan win to capture the nomination? “He’d lose 35 states,” the senator predicted.
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