He's a bald-faced liar
I know, I know, so what's new? Even Newt Gingrich, a pathological lying lobbyist himself, will tell you Mitt Romney is a bald-faced liar. But in Romney's speech last night after his big eight vote victory over Rick Santorum he told the crowd that Barack Obama has 'tripled the deficit George W. Bush left us'. That's a ridiculous lie that may get by the ignorant wingnuts and get Romney nominated but it won't work on the people who actually think for themselves and who are aware of the facts.
George W. Bush's last budget deficit was $1.2 trillion. Barack Obama has reduced Bush's deficit by over $200 BILLION in three years time. The first time Romney tries that lie in a debate with Obama, he's going to get that well-documented fact shoved down his throat.