Since Jan. 2, Iowans have been getting to know Mary Schlicte, R.N. In a barrage of folksy television spots and clever mailings, the veteran nurse has been telling them about her deep roots in Cedar Rapids, her seven children and her devotion to Howard Dean. "I’ve looked Howard Dean in the eye," says Ms. Schlicte, as the soft focus catches the flowers over her left shoulder. "I believe him when he says he’s going to work for me." Ms. Schlicte, with her earnest delivery and blond bangs, is pure Iowa. But the man who’s making her a star is just...