Rick Santorum, whose campaign barely registered with the public late last year, has surged dramatically in recent weeks

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Rick Santorum, whose campaign barely registered with the public late last year, has surged dramatically in recent weeks

Chris Graythen

The #26 Front Row Motorsports Ford of Tony Raines, sponsored by Rick Santorum in Daytona Beach, Florida. White House hopeful Mitt Romney insisted he was the true conservative in the Republican race, but faced a barrage of criticism by Rick Santorum as they courted voters days before a critical Michigan primary.