Washington (CNN) - Casino mogul and major Republican donor Sheldon Adelson met Mitt Romney last week while he was in Nevada campaigning for the state's caucuses, a source familiar with the meeting confirmed to CNN.
Adelson is a major backer of the super PAC supporting Romney's rival Newt Gingrich, "Winning Our Future." Adelson and his extended family have donated $11 million to that PAC.
Adelson has "assured Romney that he will be behind him 100 percent should he become the nominee," the source told CNN.
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Romney and Adelson had previously talked by phone, the source told CNN.
The source would not speak on the record because the meeting and conversations are private.
CNN previously reported Gingrich and Adelson had a brief meeting while they both attended a meeting of donors to Gingrich's campaign.
The contributions by the Adelson family to the PAC were a major boost to it allowing the group to spend millions of dollars on ads in South Carolina and Florida as it fought it off a major financial disadvantage compared to the Romney campaign and the super PAC supporting him.
Spokesmen for Adelson and Romney did not return requests for comment.
Politico first reported the Romney meeting with Adelson.
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