Walker has an advantage as an incumbent who survived the recall by a comfortable margin, noted University of Virginia political science professor Larry Sabato, who monitors state and national elections. After Burke’s announcement, Sabato reviewed his projection for Wisconsin’s gubernatorial race but decided not to change it from “likely Republican.” “She just doesn’t seem to have the résumé to be a serious challenger to Walker,” Sabato said. “Could there be an upset? Sure. We’re 13 months from the election. The signs 13 months in advance fa...