PBS NewsHour: Deconstructing a Republican Hopeful's Road to 1,144 Delegates

The Republican Party's eventual nominee needs to secure 1,144 delegates. With wins in Michigan and Arizona Wednesday, Mitt Romney leads the GOP field with 135. Gwen Ifill discusses Super Tuesday, when a sizable 419 delegates are at stake, with Political Editor Christina Bellantoni and Frontloading HQ's Josh Putnam.

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