If this report is any indication, Rick Santorum seems as likely to double down as to drop out. That certainly fits in with his recent pattern of increasing the sharpness and frequency of his attacks on Mitt Romney. Santorum has also been talking up the similarities between Romney and Barack Obama. In the end, the voters in Pennsylvania will have much to say about Santorum's plans.
UPDATE: It looks as though Santorum does indeed intend to double down.
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