A survey by Public Policy Polling shows Obama leading in North Carolina, with 55 percent to rival Hillary Clinton's 34 percent.

The results came after two high-profile speeches by Obama: One on Iraq in Fayetteville, and another in response to video of his minister, Rev. Jeremiah Wright, condemning America.

"This 21 point lead is the largest he has shown in any NC polling to date, and an indication that the Wright controversy isn't causing him any long term harm at least in this state," wrote pollster Tom Jensen on his blog.

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