President-elect Donald Trump named Reince Priebus, chairman of the Republican National Committee, as his chief of staff on Nov. 13, 2016.

Priebus, along with former head of Breitbart News Steve Bannon, will be "working as equal partners to transform the federal government," Trump said in the statement. Bannon was appointed as chief strategist and senior counselor to the president.

Despite Trump's promise to "drain the swamp" of establishment politicians, Priebus is a Washington insider who is expected to help restore Trump's relationship with Republican Party leaders.

Here are seven things to know about Trump's new right-hand man.

He lived most his life in Wisconsin

Priebus was born in New Jersey, but he
Priebus was born in New Jersey, but he moved to Wisconsin at a young age. He grew up near Kenosha and stayed in Wisconsin until moving to D.C. after his election as the RNC chairman. (Credit: Getty Images / Chip Somodevilla)

He ran for office in Wisconsin in 2004

Priebus ran for the Wisconsin State Senate in
Priebus ran for the Wisconsin State Senate in 2004, but he lost to the Democratic incumbent, Robert Wirch. Priebus went on to become the RNC's Wisconsin state party chairman, before running for the RNC chairman position in 2010. (Credit: Getty Images / John Moore)

He became the RNC chairman in 2011

Priebus was elected in 2011, and later re-elected
Priebus was elected in 2011, and later re-elected in 2013 and 2015. He is the longest serving RNC chairman in modern history, according to the GOP website. (Credit: Getty Images / John Moore)

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He is credited for lowering the party's debt

When Priebus took over the RNC in 2011,
When Priebus took over the RNC in 2011, it was $23 million in debt. He prioritized cutting that debt and restoring relationships with donors. After the first year of his chairmanship, the RNC had $20 million in the bank and $13 million in debt. (Credit: Getty Images / Joe Raedle)

He is close with Paul Ryan and Scott Walker

Priebus, House Speaker Paul Ryan and Wisconsin Gov.

Priebus, House Speaker Paul Ryan and Wisconsin Gov. Scott Walker have worked together for a number of years. A 2011 Washington Post article describes the three men as "political soul mates."

"They share a worldview, a set of conservative values and a determination to show the country that conservative governance can solve many of the nation's problems," the article says. "And in Wisconsin, they found a way to unify the party establishment with the tea party movement, avoiding many of the conflicts that occurred in other states."

The three Wisconsin politicians were sometimes referred to as the "Cheesehead Mafia," and have been credited for reshaping the Republican Party.

(Credit: Getty Images / Joe Raedle)

He supported Trump when other Republicans didn't

Early on, Priebus urged Republicans to stand behind

Early on, Priebus urged Republicans to stand behind the party's nominee, no matter who it would be. He expressed his support for Trump when he earned the nomination, and even as other Republican leaders withdrew support after the 2005 tape of Trump speaking inappropriately about women came out, Priebus stood by him.

"Nothing has changed in regard with our relationship," he said at the time. "We are in full coordination with the Trump campaign. We have a great relationship with them. And we are going to continue to work together to make sure he wins in November."

(Credit: Getty Images / Mark Wilson)

He plays the piano

Priebus told Reuters that he often plays the
Priebus told Reuters that he often plays the piano to relax. "Tickling the ivories is a lifelong passion for Priebus and he has been doing it 'more than usual' lately," according to a Reuters article in April. "It's his way of easing the stress from the most combustible Republican presidential race in generations." (Credit: Getty Images / Mark Wilson)