The Obama campaign just put out this statement:
“Jim did not want to distract in any way from the very important task of gathering information about my vice presidential nominee, so he has made a decision to step aside that I accept. We have a very good selection process underway, and I am confident that it will produce a number of highly qualified candidates for me to choose from in the weeks ahead. I remain grateful to Jim for his service and his efforts in this process,” said Barack Obama.