If South Dakota Senator Larry Pressler wins his hotly contested re-election battle, he may owe it to help from an unlikely source: a little-read Washington expose that describes him as "an imbecile of fantastic proportions" and suggests that he is gay. Pressler is making the book's rumors, and his contention that his opponent helped spread them, the cornerstone of his unorthodox bid for a fourth term. Depending on whom you ask, Pressler's crusade is either a principled stand against mudslinging or a shrewdly cynical attempt to win votes by presenting himself as a victim.
The race, which pits Pressler against the...