Republican presidential candidate, former House Speaker Newt Gingrich waits to be introduced for a speech on the floor of the Oklahoma State Legislature in Oklahoma City, Okla., Tuesday, Feb. 21, 2012. (AP Photo/Evan Vucci)

Associated Press
Republican presidential candidate, former House Speaker Newt Gingrich waits to be introduced for a speech on the floor of the Oklahoma State Legislature in Oklahoma City, Okla., Tuesday, Feb. 21, 2012.  (AP Photo/Evan Vucci)
Republican presidential candidate, former House Speaker Newt Gingrich waits to be introduced for a speech on the floor of the Oklahoma State Legislature in Oklahoma City, Okla., Tuesday, Feb. 21, 2012. (AP Photo/Evan Vucci)
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