Maggie Haberman and Nicholas Confessore report at The New York Times:
One of the wealthiest and most influential Republican donors in the country is throwing his support to Senator Marco Rubio of Florida, a decision that could swing millions of dollars in contributions behind Mr. Rubio at a critical point in the Republican nominating battle.
The decision by the donor, Paul Singer, a billionaire New York investor, is a signal victory for Mr. Rubio in his battle with his rival Jeb Bush for the affections of major Republican patrons and the party’s business wing.
It comes as a major blow to Mr. Bush, who is seeing his once vigorous campaign imperiled by doubts among supporters, and whose early dominance of the race was driven by his financial muscle. Mr. Bush and several other candidates, including Gov. Chris Christie of New Jersey, had competed fiercely for Mr. Singer’s blessing.
In a letter that Mr. Singer sent to dozens of other donors on Friday, which was obtained by The New York Times, Mr. Singer described Mr. Rubio — who was elected to the Senate in theTea Party wave but has been embraced by the party’s Washington elite — as the only candidate who can “navigate this complex primary process, and still be in a position to defeat” Hillary Rodham Clinton in a general election.About the same time in the 2012 cycle, there was a similar shift toward Mitt Romney.