Democratic presidential candidate Sen. Bernie Sanders said in an interview that will air later Tuesday that he had ‘a real problem” with Mike Bloomberg spending hundreds of millions of his own money on his presidential bid.

“I don’t begrudge his wealth, but I do begrudge a billionaire thinking he can buy the election. He has every right in the world to run for office…But he doesn’t have the right to buy an election. This is exactly the problem with American politics,” he told NBC News’ Lester Holt about the former Gotham mayor running for the White House.

Sanders added that he had “a real problem with multibillionaires literally buying elections.”

Asked whether party unity or winning as many states as he could was his top priority, Sanders replied: “It’s both, but I think…virtually all Democrats and a heck of a lot of Independents understand that it is absolutely imperative we defeat the most dangerous President in the modern history of this country.”

Sanders’ comments came a day after a Quinnipiac poll showed that he had pulled ahead of Joe Biden nationally.

But the poll also showed Bloomberg jump into third place and score the largest lead of any Democrat in a head-to-head matchup with President Trump.

Sanders got 25 percent of the vote among Democratic voters and independents who lean Democratic, while the former veep got 17 percent and Bloomberg got 15 percent — up from 8 percent in a Q poll on Jan. 28.

Sen. Elizabeth Warren came in fourth at 14 percent, former South Bend Mayor Pete Buttigieg got 10 percent and Sen. Amy Klobuchar earned 4 percent.

Bloomberg is the only candidate who is self-funding his campaign.