Tammy Baldwin is 16 minutes early. The campaign office is already almost full of people who want to meet their candidate for U.S. Senate. Thirty-odd student volunteers, most of them from the University of Wisconsin, sit in chairs and against the walls, decorated by handmade charts that show how many doors they’ve knocked on, by 8 x 11 print-outs of Joe Biden quotes, by a whiteboard decorated with the Obama “O” logo and an inspirational message.