...And that will all come on top of the barrage of negative ads from Republican groups. Despite the conventional wisdom that Obama would attack Romney to distract from the poor state of the economy, the Post finds that 100 percent of the ad spending from GOP-aligned groups Americans for Prosperity, the American Energy Alliance, American Crossroads and Crossroads GPS have been negative. 58 percent of Romney’s spending has been on negative ads, compared to only 44 percent of Obama’s. If anyone can win this election on the strength of a barrage of misleading negative ads, it won’t be Obama, it will be his opponent.