Chris Christie will get GOP 2016 nod: Ken Langone

Billionaire Ken Langone told CNBC on Wednesday he's going to do "everything possible" to help Chris Christie get the 2016 Republican presidential nomination should the New Jersey governor decide to run.

The Home Depot co-founder added in an interview on a "Squawk Box" that whoever ultimately becomes the GOP nominee: "I'm all-in."

He said he'd also like to see Jeb Bush, Mitt Romney and Ben Carson, a retired neurosurgeon and conservative favorite, run for the Republican nomination because it would keep the fringe candidates out of the race.

Among Republicans in CNBC's Millionaire Survey, Chrisie comes in second to Bush. But overall, in the poll evenly split among Democrats, Republicans and Independents, Hillary Clinton was the top choice of millionaires.

Read MoreMillionaires' choice for president: Hillary

In a head-to-head matchup between Bush and Christie, Langone said Christie would win—citing the plainspoken governor's ability to attract not only GOP voters but minorities, women and independents. "America is ready for the truth and direct talk."

But Langone, who's currently chairman of Invemed Associates with a focus on investing in medical technology, admitted that he might not be the best person to make predictions.

He said he backed Bob Dole, Rudy Giuliani, John McCain and Romney, all of whom did not win the White House. But he jokingly added, "A stopped clocked is right twice a day. It's my time to be perfect."

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