The USA TODAY Network spent time in eight counties in eight states, exploring the key electoral themes that could decide this fall’s election. Each week, we featured a different one. The series has looked at Waukesha County in WisconsinChester County in PennsylvaniaWayne County in MichiganMaricopa Count in ArizonaUnion County in IowaLarimer County in Colorado and Clark County in Ohio. Today's final installment: Hillsborough County in Florida. 

Scott Walker, wearing a politician’s standard pale blue shirt, red tie, and dark slacks, casually paced the stage. In a midwestern accent that embraced the Tea Party activists gathered for the Iowa Freedom Summit, he gave an emotional speech about how their prayers protected his family when it came under siege by opponents in the Occupy movement. At one point, he said, the protesters reminded him of why he became Wisconsin’s governor in the first place, spurring him to remember to “go big and to go bold.”