House Benghazi Committee Chairman Trey Gowdy enters a secure area of Capitol Hill on Wednesday, January 6, as his panel holds a closed-door interview with former CIA Director David Petraeus. The committee has been investigating the 2012 assaults on the U.S. Consulate in Benghazi, Libya, where attackers killed four Americans, including U.S. Ambassador Christopher Stevens.
Former President Bill Clinton waves as he arrives during a campaign stop for his wife, Democratic presidential candidate Hillary Clinton, in Nashua, New Hampshire, on Monday, January 4.
Democratic presidential candidates Hillary Clinton, Martin O'Malley and Bernie Sanders stand on stage with Senate Minority Leader Harry Reid (second from right) during the Battle Born-Battleground First in the West Dinner in Las Vegas on Wednesday, January 6.
Campaign staffer Kyle Radon, left, and volunteer Jack Davidson look over information as they call Iowa residents from the state headquarters in West Des Moines for Republican presidential candidate Jeb Bush on Wednesday, January 6.
A supporter screams as Republican presidential candidate Donald Trump signs her poster during a campaign rally in Lowell, Massachusetts, on Monday, January 4.
Ted Cruz campaigns for the Republican presidential nomination at Penny's Diner in Missouri Valley, Iowa, on Monday, January 4.
Republican presidential candidate Mike Huckabee is seen through wall slats as he speaks in Urbandale, Iowa, on Sunday, January 3. Caucuses in Iowa are set for February 1.
A young boy sits this one out while Republican presidential candidate Marco Rubio speaks at a rally in Dallas on Wednesday, January 6.
Republican presidential candidate Ben Carson shakes hands with supporters at a town hall in Panora, Iowa, on Wednesday, January 6.
Campaign brochures for Republican presidential candidate Carly Fiorina sit on a table next to an attendee eating after Fiorina spoke in Manchester, New Hampshire, on Tuesday, January 5.
Brig. Gen. Diana Holland, left, stands with Command Sgt. Maj. Dawn Rippelmeyer, center, and West Point Superintendent Lt . Gen. Robert Caslen as they arrive for a ceremony where Holland assumed the role as the first female commandant of cadets at the U.S. Military Academy at West Point, New York, on January 5.