Republicans are favored by only 3 percentage points over Democrats among registered voters in a generic ballot for Congress, according to a new Gallup survey. But when Gallup divided the survey results based on who is likely to vote and what the turnout might be, the GOP lead jumped. If there is a high turnout of likely voters in November, Republicans have a 13 percentage point edge. Even more worrisome to Democrats: If there is a low turnout, Republicans have an 18-point edge. That caused John Fund of the Wall Street Journal to wonder whether "some word more cataclysmic than 'tsunami' would be needed for the Democratic losses."