Rep. Steny Hoyer and former Lt. Gov. Anthony Brown sailed to victories at the polls Tuesday, winning the 4th and 5th Districts in the U.S. House of Representatives, respectively.

Hoyer, the Democratic incumbent, secured 67 percent of the vote to win his re-election. He beat out Republican challenger Mark Arness and Libertarian opponent Jason Summers, who took 30 percent and 3 percent of the vote, respectively.

"I am proud of what I've accomplished on behalf of my constituents throughout my career, from fighting for federal employees, veterans, and seniors … to working for job creation and middle-class opportunities," Hoyer said in a news release Tuesday night. "But there is still a great deal of work to be done."

Hoyer will be serving his 18th consecutive term in the House. He had beat Republican opponent Chris Chafee in 2014 by securing 64 percent of the vote, and earned 69 percent of the vote against Republican Tony O'Donnell in 2012.

Hoyer has been the minority whip since 2011 — the second-highest ranking member for Democratic House leadership. The 5th District covers much of the area southeast of Washington, as well as the University of Maryland campus.

Additionally, Brown will take over the 4th District House seat of Rep. Donna Edwards, who ran for Senate this election but lost to 8th District Rep. Chris Van Hollen during April0s's primary election. Brown beat the Republican candidate George McDermott to win this district, which encompasses parts of College Park on the west side of Adelphi Road.

"It's great to be back, yes indeed," Brown said at his acceptance speech at the Democratic victory party in Silver Spring at the National Labor College Campus. "Isn't it great to be a Marylander?"

The crowd roared.

"I want to thank you for putting your trust and faith in me to serve as your next congressman in the 115th Congress," he continued. "And while I missed the opportunity to serve with Chris [Van Hollen] in the House, no doubt Maryland is much better off when he brings his passion … to serve each and every one of us in the United States Senate."

Brown lost to Gov. Larry Hogan in the 2014 gubernatorial race. Brown is a newcomer to the House but holds previous experience in the Maryland state legislature, representing Prince George's County. He served as former Gov. Martin O'Malley's lieutenant governor from 2007 until last year.

Hoyer graduated from this university in 1963 before earning his law degree from Georgetown University. He attended Suitland High School in Prince George's County.

Hoyer's main opponent, Arness, is a Calvert County resident who had a medical career in the military and was a decorated combat veteran, according to his campaign website. Arness also served an 11-month prison sentence after he was convicted in a court-martial for numerous "false official statements" and "absenting himself from his place of duty," according to court documents.

Hoyer and Brown will begin their new terms in the 115th Congress, which is set to begin on Jan. 3.

Staff writer Alex Carolan contributed to this report.