Democratic presidential candidate Hillary Rodham Clinton flexes her muscles with Miss Teen New Hampshire Allie Knault, center, and Miss New Hampshire Holly Blanchard, during a Fourth of July parade, Saturday, July 4, 2015, in Gorham, N.H. (AP Photo/Robert F. Bukaty)Alongside the patriotic music and waving flags Saturday in parades across Iowa and New Hampshire were clear reminders of a presidential race coming up next year: Red balloons promoting “Jeb! 2016,” a tractor draped in a Rick Perry banner and dutiful volunteers holding signs and chanting for their chosen candidates.