Top 2016 Republican presidential candidates and one potential contender take to the stage in caucus state Iowa. Display (no reporter narration).
DISPLAY (NO REPORTER NARRATION) Scott Walker, a likely Republican presidential contender who is riding high in polls in the early voting state of Iowa, was literally the leader of the pack on Saturday at a gathering of 2016 White House hopefuls. Walker, the governor of neighboring Wisconsin, joined U.S. Senator Joni Ernst at the head of a parade of about 300 motorcycle riders who traveled 39 miles (62 km)to Ernst's inaugural "Roast and Ride," a political event combining barbecue and the roar of Harley-Davidsons. The spot in front was appropriate for the new front-runner in Iowa, the state that in seven months holds the first nominating contest to pick the party's presidential candidate before the November 2016 election. Walker, who built his reputation by taking on labor unions, has led the five most recent polls in Iowa, including the respected Des Moines Register poll. The Register showed him with a seven-percentage point lead over four tightly bunched rivals and found he was viewed favorably by two-thirds of likely Iowa caucus-goers. Walker, a motorcycle enthusiast who addressed Saturday's crowd in his black Harley-Davidson t-shirt, was one of seven declared or likely Republican presidential contenders to give brief speeches at Ernst's barbecue. Texas Governor Rick Perry led his own motorcycle ride to the fairgrounds. U.S. Senators Lindsey Graham and Marco Rubio, former Arkansas Governor Mike Huckabee, former business executive Carly Fiorina and retired neurosurgeon Ben Carson spoke but did not participate in the motorcycle ride, although each contender put up a tent at the site to woo voters.