The Hill News

Newt Gingrich shrugged off a series of attacks by Mitt Romney on Thursday, pledging to "stay positive" in his campaign to seek the Republican nomination.

“I’m going to stay positive, I’m going to talk about how we solve the country’s problems. And I have one opponent, Barack Obama, and that’s how our campaign is going to keep moving forward," Gingrich said at a campaign stop in South Carolina. "Others are allowed to do what they want to do.”

The Romney campaign hosted a conference call earlier Thursday in which former New Hampshire Gov. John Sununu blasted Gingrich for criticism of Rep. Paul Ryan's (R-Wis.) Medicare block grant plan.

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