Former House Speaker Newt Gingrich speaks to local party activists Thursday in Waterloo, Iowa. Gingrich says his campaign is alive and well despite an angry response by some Republicans to earlier comments he made about a House Republican plan to dramatically change Medicare. Charlie Neibergall/AP hide caption

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A protester literally turns Newt Gingrich into a glitterati member at a Minneapolis book signing, May 17, 2011. Jeff Baenen/AP hide caption

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Then-House Speaker Newt Gingrich holds up a copy of the Republican Party's "Contract with America" during a rally to celebrate the first 50 days of the Republican majority in Congress in 1995. Joshua Roberts/AFP/Getty Images hide caption

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