Republican presidential candidate, Wisconsin Gov. Scott Walker, R-Wis., speaks to an overflow crowd from the back of a pickup truck outside Joey's Diner, Thursday, July 16, 2015, in Amherst, N.H.
Republican presidential candidate, Wisconsin Gov. Scott Walker, R-Wis., speaks to an overflow crowd from the back of a pickup truck outside Joey's Diner, Thursday, July 16, 2015, in Amherst, N.H. Jim Cole AP
Republican presidential candidate, Wisconsin Gov. Scott Walker, R-Wis., speaks to an overflow crowd from the back of a pickup truck outside Joey's Diner, Thursday, July 16, 2015, in Amherst, N.H. Jim Cole AP