President-elect Joseph R. Biden Jr. plans to call Jaime Harrison at his decide to steer the Democratic Nationwide Committee, a part of an effort to bolster the committee forward of what are already anticipated to be difficult midterm elections for the celebration, in line with two folks with information of the choice.

A former chairman of the South Carolina Democratic Social gathering, Mr. Harrison grew to become a nationwide political star final 12 months as he shattered fund-raising records in his race towards Senator Lindsey Graham, who was up for re-election. Whereas Mr. Harrison misplaced in November, drawing 44 percent of the vote to Mr. Graham’s 55 p.c, he developed a broad bench of assist throughout the celebration.

He’s additionally well-known to employees and members of the D.N.C., a results of his work heading the South Carolina state celebration and a failed bid to become chairman of the committee in 2017. (Tom Perez, the outgoing D.N.C. chair, gained that race.) Mr. Harrison has been championed by Consultant Jim Clyburn of South Carolina, an influential Biden ally who helped the president-elect win the first race in Mr. Clyburn’s dwelling state. Mr. Perez opted towards operating for a second time period.

Incoming presidents historically take management of the celebration committees, putting in their very own chair and staffers. Former President Barack Obama selected to strive set up his personal political operation exterior of the committee, a choice that many D.N.C. members say broken state events and led to years of dysfunction on the nationwide degree.

Way more of a celebration institutionalist, Mr. Biden has promised to rebuild state events and deepen investments within the committee.

The concentrate on the nationwide celebration committee comes as Democrats try to navigate a deeply unsure political panorama. Even earlier than the assault on the U.S. Capitol scrambled American politics, Democrats anticipated troublesome Home and Senate midterm races in 2022 and the lingering risk that Mr. Biden — who will develop into the oldest president in U.S. historical past on Wednesday — might determine to not run for a second time period.