Robertson and Romney have known each other for decades, going back to when Romney was running Bain Capital and Robertson's Tiger Management was one of the largest hedge funds around. At the height of Tiger's success, the fund was overseeing more than $20 billion....

Joining Robertson in Boston will be other big donors to the Romney campaign, including New York Jets owner Woody Johnson and controversial casino magnate Sheldon Adelson, who has emerged as one of the biggest contributors to Republican candidates this year.

Anthony Scaramucci, founder of investment firm Skybridge Capital, organizer of the popular SALT hedge fund conference in Las Vegas and a long-time Romney supporter, is also heading to Boston. Paul Singer, who runs the $20 billion Elliott Associates hedge fund and has been another strong Romney supporter, was invited to spend the evening in Boston but his plans are unknown....

John Paulson, who made billions betting on the collapse of the U.S. housing market, is hosting a small election party at his Upper East Side townhouse. Paulson, whose Paulson & Co hedge funds have endured two rough years, has long been a reliable host for Romney events, throwing parties for the candidate at his summer and regular residences.