Because of the timing of Rezko's sentencing, this will be an issue in play over the next few weeks, and I would expect to hear about it in a debate. While the ad is not getting much in shock factor, it brings Rezko into the campaign again.
Rezko is the exception, a major albatross for Obama. He was a key fundraiser for Obama and sold him a patch of land adjacent to Obama's home -- a deal that the Democratic nominee has called a "boneheaded mistake." But the Chicago businessman, who was convicted of corruption charges in June, was not under investigation at the time of these dealings.