He's a brilliant guy, and a great debater. But he comes with baggage . . . a lot of it.
His work on behalf of the discredited Freddie Mac (he denies lobbying).
And ladies and gentlemen, that's just in the 2012 campaign. From the 90's, we have a slew of "golden oldies": This, and this, and even this (though he denies this one, too).
And of course, there's the whole global warming thing.
There's a lot I admire about Newt Gingrich, not least his visionary leadership that resulted in Republican triumph in 1994. But there is a flakiness factor about him that makes him ill-suited for the spotlight of a presidential campaign. And every moment spent reviewing his controversial past is a moment not spent discussing President Obama's disastrous record.