How Do You Tell if Mitt Romney's Lying?

Typically, when you ask of someone, "how can you tell if so-and-so's lying?" and the answer is supposed to be, "because their lips are moving," it's an exaggeration. The person tells an awful lot of lies, presumably, but it's not literally everything they say that's a lie. But, I dunno, I think in the case of Mitt Romney it might be pretty close to a literal statement of reality. In the past couple of weeks he's attacked Obama for saying something he literally didn't say, the whole "you didn't build that" nonsense; he's attacked Obama for suing to stop soldiers from getting to vote early in Ohio, whereas in fact Obama is suing to get everyone else to be allowed to vote early in Ohio, also; and just now he's attacking Obama for gutting the work requirement of the 1996 welfare reform, when in reality Obama is soliciting plans from the states to get welfare recipients jobs more efficiently. It's really astonishing how small a percentage of Romney's attacks are actually grounded in the slightest bit of factual evidence.

Meanwhile, Romney's favorability ratings continue to lag far behind Obama's. I wonder why? Hopefully people will be smart enough not to vote for the person they like worse.