Trump to endorse Gingrich.

No really.

Word started leaking out in Las Vegas earlier that Donald Trump's "major announcement" is to back Newt Gingrich, and sources are confirming it to POLITICO.

The announcement is expected to come at an 11:30 a.m. press conference tomorrow that The Donald is holding.

The move is a bit unexpected, since Trump had talked even within the last few days about how he may be compelled to run a third-party campaign of his own if he didn't see a Republican candidate who he thought could beat President Obama...

Trump was courted repeatedly by several of the GOP hopefuls. Gingrich, when he was soaring in his first rise before the Iowa caucuses, made a trek to Trump's Fifth Avenue office in Manhattan to ask for his support.

I would say it probably doesn't matter but it is pre-Nevada-primary.  Still, it sounds like either a gamble or a bluff.  Gingrich is still the underdog, and Trump repeatedly threatened to run third party if the Republicans did not find a suitable nominee (whatever that might mean).