Former New York City Mayor Michael Bloomberg Michael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE is pledging to work “in the open” with staff if he is elected president in 2020.

Bloomberg in a Wednesday LinkedIn post promoted transparency and open offices, saying they foster trust and promote collaboration in workspaces. He said he would run his White House in the same way he’s managed his media company and City Hall in New York City.

“If I’m elected president, I’ll run the White House the way I’ve always run things,” he said. “I’ll use the Oval Office for some official functions, but the rest of the time I’ll sit in the open with everyone else.”

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The former mayor said he has passed on traditional offices and sat “out in the open” near his employees.

“If you’re in charge, why would you want to wall yourself off from your team?” he asked. “It makes no sense, but it’s tradition — and an ego trip — so executives think they’re entitled to it.”

Bloomberg also said that walls damage communication and closed-door meetings can instill a sense of distrust among those excluded.

He said he set up a “bullpen” room for his staff to work in together when he moved to City Hall. Critics said the open space would lead to more leaks, Bloomberg said, but his office had “virtually no leaks.”

“Managers who unite can achieve great things, while those that don’t are destined to fail,” he said.

“Some people like to build walls I like to tear them down,” Bloomberg added, in a nod to President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE’s campaign promise to build a wall along the U.S.-Mexico border.

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The former mayor entered the 2020 Democratic presidential race last month. While he will not make the debate stage Thursday night, he is currently ranked in fifth place in national polls, according to a RealClearPolitics average of surveys.

Bloomberg has marketed himself as a moderate Democrat who knows how to run a staff.

He criticized Democratic front-runner Joe Biden Joe BidenBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Joe Biden should enact critical government reforms if he wins MORE in a Wednesday MSNBC interview, saying the former vice president and senator has "never been the manager of an organization."