Six numbers to ignore from the presidential campaign

The presidential race has been replete with statistics and data tossed out by the candidates that purport to show something threatening or wrongheaded about their opponent's policies. Typically, they don't just make up their numbers; instead, they take research produced by someone else (often an ideologically friendly source), then apply their own spin. And in many cases, that spin takes the statistic so far out of context, it becomes misleading at best. Here are six examples of numbers frequently cited by the Obama and Romney campaigns that voters should either ignore or take with a very large grain of salt. --Jon Healey