A Photo Gallery of GOP Candidates Campaigning for the Iowa Caucuses

In the final days leading up to Tuesday’s GOP caucus kick off, photographer Khue Bui captured the candidates shaking hands, signing autographs, attending rallies and doing whatever it takes to make contact with Iowa voters.

Khue Bui for Newsweek

Khue Bui for Newsweek

See highlights from the GOP's first contest of the election season.

Khue Bui for Newsweek

Mitt Romney and wife, Ann, address with caucus night supporters at the Hotel Fort Des Moines Tuesday, January 3, 2012.

John Gress / Reuters-Landov

Rick Santorum and his wife Karen Garver Santorum celebrate at his Iowa Caucus night rally in Johnston, Iowa.

Andrew Burton / Getty Images

Supporters of Republican presidential hopeful and former U.S. Sen. Rick Santorum hold up signs while waiting at the Stoney Creek Inn for the arrival of Santorum.

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Romney supporters watch the extremely close returns at the candidate's caucus night gathering in Des Moines.

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Supporters of Mitt Romney at his caucus night gathering in Des Moines, IA.

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Workers set up the site for Mitt Romney's Caucus night gathering at the Hotel Fort Des Moines Jan. 3, 2012.

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A supporter looks through speaker supports as Mitt Romney shakes hands at the Mississippi Valley Fairgrounds in Davenport, IA.

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Santorum

Rick Santorum talks with the press in Newton, IA.

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Mitt Romney poses for photos after a rally in Davenport, IA.

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Ann Romney, wife of Mitt Romney, conducts a live shot on Fox News at the Mississippi Valley Fairgrounds in Davenport, IA.

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Former Rick Santorum and wife, Karen, meet at the Pizza Ranch in Altoona, IA.

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Rick Santorum and wife, Karen, meet with supporters at the Pizza Ranch.

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A PETA supporter protests before Rick Santorum meets with supporters at the Pizza Ranch in Newton. PETA departed and did not interrupt the event.

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MSNBC's Joe Scarborough listens as Rick Santorum speaks at the Pizza Ranch.

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Members of the Duggar Family listen to Rick Santorum in Newton, IA.

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Mitt Romney holds a rally at the Mississippi Valley Fairgrounds in Davenport, IA.

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Mitt Romney conducts a TV interview under the watchful eye of his security in Davenport, IA.

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A Romney supporter holds the candidate's book close to his heart in Clive, IA.

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Rick Santorum takes a call in Newton, IA.

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Signs and shadows in the snow in Atlantic, IA.

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Journalists await the arrival of Mitt Romney at the Family Table Restaurant in Atlantic, IA.

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Rick Santorum takes in the Pinstripe Bowl game at the Buffalo Wild Wings in Ames.

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Mitt Romney, wife Ann and son Craig, meet and greet with voters at the Family Table Restaurant.

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Rick Perry shakes hands in Boone, IA.

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Rick Perry attends a meet and greet in front of the American flag in Boone, IA.

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There were two types of people at a West Des Moines grocery store on Friday December 30: shoppers and rally goers.

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Jim Wilson, from Buckingham, Va., lights his pipe near a decked-out Romney-mobile in Ames.

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Rick Perry supporters, including the notorious sheriff of Maricopa County in Arizona, Joe Arpaio, gather at the Smokey Row Coffee Shop in Pella.

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Perry sure is making the rounds in Iowa. Pictured, he signs his autograph for a voter at the Sports Page restaurant in Indianola.

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David’s Milwaukee Diner really rolled out the red carpet for the local guest of honor on Thursday. Ron Paul was in Perry for a town hall meeting at the Hotel Pattee. 

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Ron Paul greets supporters after a Salute to Veterans Rally at the Iowa State Fairgrounds Wednesday.

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A behind-the-camera view of Ron Paul’s town hall meeting in Perry.

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Rick Perry is excited to get this meet-and-greet started as he pulls up to the Sports Page restaurant in Indianola.

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It wouldn’t be a rally without some ‘Occupy’ protesters. Ron Paul’s Salute to Veterans Rally was disrupted when some angry occupiers showed up at the Iowa State Fairgrounds.

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His raised thumb says ‘it’s all good’ but we note a hint of fear in Mitt Romney’s face as he climbs into his tour bus following a rally in Ames.

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The Makohoniuk Family of Waukee, Iowa poses for a picture outside the West Des Moines grocery store where they were shopping while Mitt Romney was holding a rally.

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A Ron Paul supporter listens to the Texas congressman give a salute to veterans.

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Mitt Romney lets his guard down and greets a supporter with a big bear hug at his rally in Ames.

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Scott Yochum and his mother, Marcella, are just two of the many people weathering the Iowa winter cold in hopes of seeing Mitt and Ann Romney and New Jersey Gov. Chris Christie at a rally in Des Moines Friday.

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Mitt steps out in front of a crowd of voters at his Thursday rally in Ames.

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The Romney-mobile flies its Iowa and American flags high behind shopping carts-turned-barriers at a West Des Moines rally featuring the former Massachusetts governor, his wife and New Jersey Gov. Chris Christie.