Is the World Bank satisfied that its "negative pledge" concerns have been met?

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Mr. Gingrich took a two-pronged approach as he tried to push back against weeks of negative ads without abandoning his pledge to remain positive when it comes to his GOP rivals.

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Governor Romney said yesterday that he'd love to have a pledge or some sort of agreement on negative ads, on personal-attack ads.

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Parents also have to pledge to display good sportsmanship, and not use negative or derogatory language with officials, coaches, other parents or kids.

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While the community provided an ideal backdrop for Ryan to emphasize the campaign pledge to preserve Medicare, the campaign drew some negative publicity this week for its ties to Morse.

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"Virginity pledgers are very different than most U.S. teens -- they are obviously more conservative, they have more negative views about sexuality and birth control and so, even if they didn't take a pledge, these would be teenagers who would be very likely to abstain anyhow, " says Rosenbaum.

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This created an opening for Obama, who had been somewhat constrained by his own pledge to be the candidate of "change, " and by implication, not to go negative.

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