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Republican presidential candidate, former U.S. Sen. Rick Santorum addresses supporters after winning the both Alabama and Mississippi primaries in Lafayette, Louisiana.

Last night, Rick Santorum picked up two primary wins in the south — carrying Alabama and Mississippi. Mitt Romney came in third in both states, behind Santorum and Newt Gingrich.

Romney did win Hawaii's primary, however, and still leads the overall delegate count in the GOP race. Even in those southern states, he picked up delegates. Romney was within 6 percent of Santorum in both states, and Romney now has 463 total delegates to Santorum's 247.

It might not matter, though. A new Pew poll found that neither Romney nor Santorum come close to beating President Obama in a head-to-head matchup, but that could change by November.

Guest

Philip Rucker, national political reporter at The Washington Post.