Davis Heads South By George Neumayr Garry South, Gray Davis's principal political adviser, is usually cocky and unflappable -- serenely and satirically mocking Republicans from a position of strategic superiority. But the wheels on the Gray Davis re-election bus are beginning to wobble, and South sounds scared. With Bill Simon ahead in several polls and Davis widely disliked, South is frantically spitting out slander about Simon to reporters. Nothing is off-limits to the Lee Atwater of the California Democratic Party, not Simon's deceased father, not his business or bank account, not even his posture. South says that he has been...