We knew Newt was toast, but...

...this makes it as close to official until a majority of delegates have been assigned.

Sheldon Adelson, the billionaire casino executive keeping Newt Gingrich’s presidential hopes alive, has relayed assurances to Mitt Romney that he will provide even more generous support to his candidacy if he becomes the Republican nominee, several associates said in interviews here.The signals from Mr. Adelson, whose politics are shaped in large part by his support for Israel, reflect what the associates said was his deep investment in defeating President Obama and his willingness to play a more prominent role in the Republican Party and conservative causes. The assurances have been conveyed in response to a highly delicate campaign by Mr. Romney and his top Jewish financial supporters to dissuade Mr. Adelson from adding to the $10 million that he and his wife have given to a pro-Gingrich “super PAC,” Winning Our Future, that has been tearing into Mr. Romney through television advertising.

Also, can anyone read this article and not come away with the impression of sustained coordination between the campaigns and the PACs? 

I've been under the impression since Newt's surge that this was really about Adelson flexing his muscles in the GOP. Newt was a pawn in Adelson's game; this is Adelson signaling to Romney what he wants in order to clear the field.