Mason-Dixon's latest poll shows Obama leading Clinton by 7 points in North Carolina. The poll was conducted this past Monday and Tuesday; Jeremiah Wright's speech at the National Press Club was Monday, so this poll will have captured at least some of the reaction:

A WRAL news poll released Wednesday shows Barack Obama's double-digit lead over Hillary Clinton among Tar heel Democrats is eroding.

Mason-Dixon Polling & Research Inc. surveyed 400 likely Democratic voters Monday and Tuesday. The results show Obama with a 7 point lead over Clinton, with 9 percent undecided. The poll has a margin of error of 5 percentage points.

“Right or wrong, it's the Wright phenomenon for Obama,” said David McLennan, a political science professor at Peace College.

With this Mason-Dixon poll factored in, the Real Clear Politics average for North Carolina is a 7.2 point Obama lead.