Dr. Miriam and Mr. Sheldon Adelson at the 2011 AIPAC Conference. Photo: Maxine Dovere.

The casino magnate Sheldon G. Adelson told Donald J. Trump in a private meeting last week that he was willing to contribute more to help elect him than he has to any previous campaign, a sum that could exceed $100 million, according to two Republicans with direct knowledge of Mr. Adelson’s commitment.

As significant, Mr. Adelson, a billionaire based in Las Vegas, has decided that he will significantly scale back his giving to congressional Republicans and direct most of his contributions to groups dedicated to Mr. Trump’s campaign. The two Republicans familiar with Mr. Adelson’s plans spoke anonymously because they were not authorized to discuss the matter publicly.

Read full story at The New York Times.