The story

Sens. Hillary Clinton and Barack Obama stumped for last-minute votes in Indiana and North Carolina Friday ahead of the states' Tuesday primaries.

In CNN's "poll of polls" released Friday, Obama is leading Clinton in North Carolina by 10 points: 50 percent to 40 percent, with 10 percent unsure.

The polls were taken April 28 through May 1 of likely Democratic primary voters, and consist of three surveys: Zogby (April 30-May 1), Research 2000 (April 29-30), and Mason-Dixon (April 28-29). Read full article »

CNN Associate Political Editor Rebecca Sinderbrand and Political Producers Ed Hornick and Alexander Marquardt contributed to this report.

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