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Republican presidential candidates Rick Santorum (L) and Mitt Romney (R) at the NBC News, National Journal, Tampa Bay Times debate held at the University of South Florida in Tampa, Florida.
The presidential primary battle heads to Arizona today, and all four GOP candidates are there for a debate tonight. Next Tuesday, the state will hold its primary and the winner will take all of Arizona's delegates.
Romney has a solid lead, helped by the state's early voting process. Can Rick Santorum's performance at tonight's debate make a difference? Dan Nowicki of the Arizona Republic talks with Madeleine about the intricacies of Arizona as a battleground for the GOP.
Dan Nowicki, political reporter for the Arizona Republic.