Aug. 2007 | Jun. 2007 | May 2007 | |
| John Edwards | 29% | 30% | 33% |
| Hillary Rodham Clinton | 29% | 26% | 27% |
| Barack Obama | 23% | 22% | 20% |
Source: Public Policy Polling
Methodology: Telephone interviews to 609 likely Republican primary voters, and 659 likely Democratic primary voters in North Carolina, conducted on Aug. 1 and Aug. 2, 2007. Margin of error is 3.8 per cent.
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