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Posted: 3/20/2013 8:47:06 PM EST
Republican presidential candidates (L-R) former U.S. Senator Rick Santorum (R-PA), Texas Governor Rick Perry, former Massachusetts Governor Mitt Romney, former U.S. Speaker of the House Newt Gingrich (R-GA), U.S. Representative Ron Paul (R-TX), U.S. Representative Michele Bachmann (R-MN), and former Governor of Utah Jon Huntsman attend the Republican Party presidential candidates debate as Gingrich speaks in Sioux City, Iowa, December 15, 2011. REUTERS/Jim Young
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Posted: 3/16/2013 4:38:45 PM EST
Former House Speaker Newt Gingrich and his wife Callista Gingrich walk from the exhibition hall at the 40th annual Conservative Political Action Conference in National Harbor, Md., Saturday, March 16, 2013. (AP Photo/Carolyn Kaster)
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Posted: 3/16/2013 4:38:45 PM EST
RETRANSMISSION TO ADD INFORMATION ABOUT THE SUBJECT OF GINGRICH'S TALK - Former House Speaker Newt Gingrich holds a lightbulb as a prop while talking about innovation and Thomas Edison during the 40th annual Conservative Political Action Conference in National Harbor, Md., Saturday, March 16, 2013. It may seem early, but the diehard activists who attended the three-day conference are already picking favorites in what could be a crowded Republican presidential primary in 2016. (AP Photo/Carolyn Kaster)
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Posted: 3/16/2013 12:53:22 PM EST
Former House Speaker Newt Gingrich gestures as he speaks at the 40th annual Conservative Political Action Conference in National Harbor, Md., Saturday, March 16, 2013. It may seem early, but the diehard activists who attended the three-day conference are already picking favorites in what could be a crowded Republican presidential primary in 2016. (AP Photo/Carolyn Kaster)
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Posted: 2/21/2013 1:11:06 AM EST
A combination photographs shows former Speaker of the House Newt Gingrich (L) in Waukesha, Wisconsin on March 31, 2012 and former Bush administration advisor Karl Rove in Beverly Hills, California on July 14, 2008 respectively. REUTERS/Darren Hauck, Fred Prouser/Files
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Posted: 11/17/2012 5:13:32 PM EST
FILE - This Sept. 24, 2012 file photo shows former House Speaker Newt Gingrich speaking, in Kirkwood, Mo. The Grand Old Party needs to get with the times. That's according to many Republicans who talked of the party's challenges following the GOP's electoral shellacking. (AP Photo/Jeff Roberson, File)
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Posted: 10/31/2012 12:28:24 PM EST
Former Republican presidential hopeful Newt Gingrich and his wife, Callista, appear at a campaign stop for Missouri Senate candidate Rep. Todd Akin, R-Mo., at Union Station, Wednesday, Oct. 31, 2012, in Kansas City, Mo. (AP Photo/Charlie Riedel)
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Posted: 10/30/2012 7:48:26 PM EST
Missouri Senate candidate Rep. Todd Akin, R-Mo., listens while former Republican presidential hopeful Newt Gingrich speaks during a campaign stop at Bennett Packaging Tuesday, Oct. 30, 2012, in Lee's Summit, Mo. Gingrich appeared with Akin at a pair of Kansas City-area fundraisers Tuesday as part of what Akin's campaign hopes will be a $1 million advertising push in the final week before the Nov. 6 election. (AP Photo/Charlie Riedel)
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Posted: 10/30/2012 7:48:26 PM EST
Missouri Senate candidate Rep. Todd Akin, R-Mo., left, listens while former Republican presidential hopeful Newt Gingrich speaks during a campaign stop at Bennett Packaging, Tuesday, Oct. 30, 2012, in Lee's Summit, Mo. Gingrich appeared with Akin at a pair of Kansas City-area fundraisers Tuesday as part of what Akin's campaign hopes will be a $1 million advertising push in the final week before the Nov. 6 election. (AP Photo/Charlie Riedel)
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Posted: 10/30/2012 7:48:26 PM EST
Former Republican presidential hopeful Newt Gingrich listens while Missouri Senate candidate Rep. Todd Akin, R-Mo., speaks during a campaign stop at Bennett Packaging, Tuesday, Oct. 30, 2012, in Lee's Summit, Mo. Gingrich appeared with Akin at a pair of Kansas City-area fundraisers Tuesday as part of what Akin's campaign hopes will be a $1 million advertising push in the final week before the Nov. 6 election. (AP Photo/Charlie Riedel)
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Posted: 9/24/2012 4:18:40 PM EST
Former House Speaker Newt Gingrich speaks during a fundraiser for Missouri Republican Senate candidate, Rep. Todd Akin, R-Mo., right, Monday, Sept. 24, 2012, in Kirkwood, Mo. Akin is seeking to unseat incumbent Sen. Claire McCaskill, D-Mo. in the November election. (AP Photo/Jeff Roberson)
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Posted: 9/24/2012 4:18:40 PM EST
Missouri Republican Senate candidate, Rep. Todd Akin, R-Mo., smiles at left as former House Speaker Newt Gingrich speaks during news conference, Monday, Sept. 24, 2012, in Kirkwood, Mo. Akin is seeking to unseat incumbent Sen. Claire McCaskill, D-Mo. in the November election. (AP Photo/Jeff Roberson)
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Posted: 9/9/2012 12:27:13 PM EST
U.S. Republican presidential hopeful Newt Gingrich speaks at the Celebration of American Values Leadership Forum during the National Rifle Association's (NRA) 141st Annual Meetings & Exhibits in St. Louis, Missouri April 13, 2012. REUTERS/Tom Gannam
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Posted: 8/30/2012 10:25:14 PM EST
Staning in front of images of former U.S. President Ronald Reagan and former first lady Nancy Reagan, former House Speaker and former Republican presidential candidate Newt Gingrich and his wife Callista address the final session of the Republican National Convention in Tampa, Florida, August 30, 2012. REUTERS/Joe Skipper
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Posted: 8/30/2012 9:03:17 PM EST
Former House Speaker Newt Gingrich and his wife Callista addresses the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/J. Scott Applewhite)
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Posted: 8/30/2012 8:49:01 PM EST
Former House Speaker Newt Gingrich and his wife Callista addresses the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/David Goldman)
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Posted: 8/30/2012 8:08:31 PM EST
Former House Speaker Newt Gingrich and his wife Callista speak to delegates during the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/Charlie Neibergall)
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Posted: 8/30/2012 8:08:29 PM EST
Former House Speaker Newt Gingrich and his wife Callista walk onto the stage to speak to delegates during the Republican National Convention in Tampa, Fla., on Thursday, Aug. 30, 2012. (AP Photo/Charlie Neibergall)
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Posted: 6/5/2012 5:25:26 PM EST
Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign event at the Hilton Hotel in Arlington, Virginia May 2, 2012. REUTERS/Benjamin Myers
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Posted: 5/30/2012 5:37:26 PM EST
Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign event at the Hilton Hotel in Arlington, Virginia May 2, 2012. REUTERS/Benjamin Myers