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Halftime in America?

Halftime seems to have extra shelf life for Rick Santorum. His campaign says it started at least as far back as March 21, before the Louisiana primary.

Halftime seems to have extra shelf life for Rick Santorum. His campaign says it started at least as far back as March 21, before the Louisiana primary. Are we really in for another four months of primary contests, or is the Santorum camp's clock not keeping time?

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