Michael Bloomberg is the Democrat who could run the most competitive campaign against President Donald Trump in 2020, according to Corey Lewandowski, Trump’s first 2016 campaign manager.

Speaking at a Christian Science Monitor event on Wednesday, Lewandowski said, “He could make it through a primary and be very competitive in a general election,” referring to the former New York City mayor.

Like Trump, Bloomberg is a successful businessman. He could use some of his billions to largely self-fund a presidential campaign.

That combined with his “100 percent name ID” would make him a formidable opponent, Lewandowski argued.

“I think it would be a very competitive race and it would be a race that wouldn’t require enormous amounts of time fundraising,” he said.