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With math on his side, Rick Santorum is in the Republican presidential-nomination race for the long haul. Though Santorum’s campaign has prodded Mitt Romney for claiming that the delegate numbers game is on his side, a memo from a Santorum strategist outlines how the former senator can grab the nomination—using a model of the delegates he needs to win. With Mississippi and Alabama’s primaries on Tuesday—which Romney is favored to walk away with—Santorum’s camp thinks he can win even if he loses both states. Santorum’s positives: momentum, the potential of a drawn-out campaign, the possibility of gaining Newt Gingrich’s delegates and unbound delegates, and a brokered convention. Unfortunately for Rick, if Mitt has a strong April, the race is probably over.