A few doubts about Newt Gingrich seem to be reaching the betting market at last. Here's a picture of what that excellent oddschecker.com site was showing as the prices offered at 9pm Canberra time tonight by the British books and betting exchanges. The blue shadings show prices that have shortened and pink those that have blown.
A similar drift in the Gingrich price has occurred at Intrade where things are shown in percents rather than as dividends.
The latest trade at 25.5%, compared to 38% a couple of days ago, is near enough equivalent to $3.92.