Hours before Karl Rove saw Senator Scott Brown at the Republican National Convention in Tampa on Thursday, he screened an advertisement that related to the Massachusetts Senate race, according to BusinessWeek. But a spokesman for Rove’s super PAC, American Crossroads, said the ad was one of two that ran in Massachusetts in November and December. That was before Brown and his opponent, Democrat Elizabeth Warren, signed a pledge intended to keep outside groups from running commercials designed to influence their race.
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