Scenes from the 2016 Primary Battlegrounds

Republican presidential candidate U.S. Senator Ted Cruz (R-TX) speaks at the First in the Nation Republican Leadership Conference in Nashua, New Hampshire, April 18, 2015.Brian Snyder—Reuters

Wisconsin Governor Scott Walker, shows off his motorcycle driver's license before a "Roast & Ride" fund-raising event sponsored by Senator Joni Ernst (R-IA) in Des Moines, Iowa June 6, 2015.Dave Kaup—Reuters

Republican presidential candidate rick santorum

Republican presidential candidate and former U.S. Senator Rick Santorum reacts as he holds Wyatt Owen, 9 months, during a campaign stop at the Food Truck Bash in Travelers Rest, SC, May 31, 2015. CHRIS KEANE—Reuters

Rand Paul New hampshire campaign office opening

Republican presidential candidate and US Senator Rand Paul (R-TN) at the opening of his New Hampshire campaign office in Manchester, NH on June 5, 2015.Rick Friedman—Corbis

Republican Presidential Hopeful mike huckabee

Republican presidential hopeful former Arkansas Governor Mike Huckabee speaks at a Roast and Ride event hosted by freshman Senator Joni Ernst (R-IA) on June 6, 2015 in Boone, Iowa. Scott Olson—Getty Images

Former New York Gov. George Pataki announces his candidacy for the 2016 Republican presidential nomination May 28, 2015 in Exeter, New Hampshire. Darren McCollester—Getty Images

Republican Presidential Hopeful jeb bush

Former Florida Governor Jeb Bush speaks to guests gathered for the Republican Party of Iowa's Lincoln Dinner at the Iowa Events Center on May 16, 2015 in Des Moines, Iowa.Scott Olson—Getty Images

In this photo taken June 1, 2015, Republican presidential candidate, Sen. Lindsey Graham, R-S.C. greets supporters in Central, S.C.Rainier Ehrhardt—AP

Republican presidential candidate Sen. Marco Rubio, R-Fla., speaks during a fundraiser for U.S. Sen. Joni Ernst, R-Iowa, June 6, 2015, in Boone, Iowa.Charlie Neibergall—AP

Democratic Presidential Candidate Martin O'Malley

Democratic presidential hopeful and former Maryland Gov. Martin O'Malley speaks to guests during a campaign event at the Sanctuary Pub on June 11, 2015 in Iowa City, Iowa.Scott Olson—Getty Images

New Jersey Gov. Chris Christie visits with Grace Miller of Nevada, Iowa, center, while meeting with customers at the Hickory Park Restaurant, June 11, 2015, in Ames, Iowa. Charlie Neibergall—AP

Carly Fiorina Republican presidential candidate

Republican presidential candidate, former Hewlett-Packard chief executive Carly Fiorina speaks with employees of Cirtronics, June 10, 2015, in Milford, N.H.Jim Cole—AP

Republican Presidential Hopeful Bobby Jindal

Louisiana Gov. Bobby Jindal listens to a speaker at the Story County GOP breakfast at Oakwood Church May 16, 2015 in Ames, Iowa.Scott Olson—Getty Images

Bernie Sanders Democratic presidential candidate

Democratic presidential candidate Sen. Bernie Sanders speaks during a rally with local residents, May 30, 2015, in Ames, Iowa.Charlie Neibergall—AP

Republican Presidential Hopeful ben carson

Republican presidential hopeful Dr. Ben Carson speaks at a Roast and Ride event hosted by freshman Senator Joni Ernst (R-IA) on June 6, 2015 in Boone, Iowa.Scott Olson—Getty Images

Rick Perry, former governor of Texas and 2016 U.S. presidential candidate, speaks during the inaugural Roast and Ride in Boone, Iowa, June 6, 2015.Daniel Acker—Bloomberg/Getty Images

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