The Intrade investors are (unlike Newt supporters such as myself) unsentimental, and for the first time in the run-up to the South Carolina primary, their collective assessment has Newt as the favorite, with a 57.5% chance of winning. Even earlier today, after all the favorable morning & afternoon polls came out, Newt was only at about 42%. What made the difference? A couple candidates: 1) Yet another PPP poll came out about 1/2 hour ago, including polling done this very night, showing Gingrich maintaining his 6 point lead. 2) Santorum's attack Chiwawa routine at the CNN debate tonight drew some...