CNN projects Rick Santorum will win the primaries in Alabama and Mississippi, shutting out Newt Gingrich in his home region for the night. FULL STORY

It’s nearly impossible for Mitt Romney’s rivals to catch him, his campaign says. Rick Santorum and Newt Gingrich disagree.

After rival Rick Santorum’s sweep in this week’s contests, Newt Gingrich is looking to revitalize his campaign with a strong showing on Super Tuesday next month.

As the Republican presidential campaign heads toward a critical showdown in the Florida primary, Mitt Romney is poised to score a victory over Newt Gingrich, according to a CNN survey of Sunshine State GOP political insiders.

With a healthy lead in the polls the day before the Florida primary, Mitt Romney is depicting Newt Gingrich as increasingly desperate in the GOP race.

Ahead of Florida’s primary, Mitt Romney and Newt Gingrich had testy exchanges over immigration and links to lenders Fannie and Freddie. FULL STORY

Mitt Romney went after his surging rival Newt Gingrich early in the GOP presidential debate Monday, saying Gingrich was the only House speaker to resign in disgrace.

Newt Gingrich's stunningly strong win in the South Carolina primary capped an incredible week in the Republican presidential nominating cycle., but what did we learn from it?

Newt Gingrich has made a dramatic comeback by winning the Republican US presidential primary in South Carolina.

Newt Gingrich won Saturday’s South Carolina GOP presidential primary, marking a stunning turnaround for a candidate whose campaign had been left for dead — again — just weeks ago.