John McCain leads a tracking poll for the first time this year. [Rasmussen]
Hillary Clinton leads a tie between Barack Obama and John Edwards in Iowa, with 30 percent to their 26 percent. [Reuters/C-SPAN/Zogby]
Clinton falls in New Hampshire, while Edwards surges and Obama gains. [American Research Group]
And the anticipated Des Moines Register Iowa poll comes out tonight. [Ambinder]
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