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LAS VEGAS, NV - FEBRUARY 03: Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign rally at Stoney's Rockin' Country February 3, 2012 in Las Vegas, Nevada. Gingrich is campaigning ahead of Nevada's February 4 caucus. (Photo by Ethan Miller/Getty Images)
LAS VEGAS, NV - FEBRUARY 03: Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign rally at Stoney's Rockin' Country February 3, 2012 in Las Vegas, Nevada. Gingrich is campaigning ahead of Nevada's February 4 caucus. (Photo by Ethan Miller/Getty Images)

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CNN contributors react to Newt Gingrich's speech following the Nevada caucuses.