Poll: More Democrats think Clinton can beat McCain than think Obama can - This represents a major shift in voter perception. If it holds up then it is safe to conclude that Jeremiah Wright has substanitally affected this race. Even if Obama wins the nomination, he would take it as a candidate backed up by less Democratic confidence than he otherwise would have had. This is relevant to how the media covers him, fundraising and his own confidence, all important political variables. See the Fox News poll here.
Primary Loss and Furor Over Ex-Pastor Hurt Obama in Poll - The New York Times offers excuses for Obama's bad showing, but for now Obama is no longer the assumed strongest Democratic candidate. Both the Fox News and NYT polls show this.
NYT attempts to end Obama's troubles with Wright with the "final word." Doubt this one is over: A Strained Wright-Obama Bond Finally Snaps