All Eyes on Walker, Rubio at the Iowa Hog and Hog Event

Two of the top Republican performers in a recent Iowa Poll try to become the leader of the pack.

Scott Walker, governor of Wisconsin, second in line, and Senator Joni Ernst, a Republican from Iowa, front, ride motorcycles during a group ride in Des Moines, Iowa, U.S., on Saturday, June 6, 2015. Iowa Senator Joni Ernst is hosting the inaugural Roast and Ride event which featured a 38-mile ride from a Des Moines Harley Davidson dealership to the Central Iowa Expo where seven current and potential Republican presidential candidates are expected to speak.

Photographer: Daniel Acker/Bloomberg
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One arrived in a navy-blue Chevrolet Traverse sport-utility vehicle, while the other rode in on a rented 2014 Harley-Davidson Road King motorcycle.

While Senator Marco Rubio of Florida and Wisconsin Governor Scott Walker arrived by different means of transport, they had the same goal Saturday at the dusty Central Iowa Expo grounds near Boone, Iowa: outshine the other.