Edwards down, Kerry up, Clark and Dean stay constant

In the Iowa political stock market since before the debate Kerry was at about 45%, Edwards at 23%, Clark at about 16% and Dean at about 15%.
This morning Kerry is up to about 49%, Edwards down to about 18%, Clark steady at 16% and Dean steady at 14-15%. The debates seemed to help Kerry modestly and hurt Edwards modestly but not to have much effect on Clark or Dean.
Iowa Dem National Convetion Market