Hillary Clinton's campaign is set to install an official who will take over the day-to-day efforts for the general-election race at the Democratic National Committee, according to several Democrats familiar with the change.

Brandon Davis, 38, will be the chief of staff for the general-election race and was introduced by Clinton campaign manager Robby Mook on Thursday morning at a DNC staff meeting. Davis served as national political director for the Service Employees International Union and is a former political director and deputy campaign manager for Sen. Claire McCaskill (D-Mo.).

The installation of a Clinton campaign aide at the DNC marks a long-anticipated takeover of the Democratic Party's core functions by the presumptive nominee as the race for the general election begins. In 2008, the Obama campaign installed Paul Tewes in a similar role. The change was first reported by CNN.

The DNC's online branding will not immediately transition to be focused on Clinton at Mook's direction, as part of the Clinton campaign's ongoing effort to reach out to Sanders supporters.

Embattled DNC Chair Debbie Wasserman Schultz is expected to remain in her post, but with the arrival of Davis, she will take on a more symbolic role. Wasserman Schultz has raised the ire of Democrats since being appointed to her job in 2011. And recently, Sen. Bernie Sanders of Vermont and his allies have accused her of mismanaging the primary process and showing bias in favor of Clinton. Her ouster is one of Sanders's key demands, but it is unclear how that will change in light of her increasingly marginalized role.

Amy Dacey, the DNC's chief executive, will remain in her post and is expected to take on an expanded role. Jen O'Malley Dillon, who was Barack Obama's battleground-states director in 2008 and deputy campaign manager in 2012, has been at the DNC for months, beginning a process of transitioning to a coordinated effort with the Clinton campaign. She will remain as a senior adviser through the general election.

The entire DNC staff was gathered for a meeting at the committee's Washington headquarters on Thursday morning and was expected to hear from Mook, Dacey and Wasserman Schultz.

Over the past several weeks, some Clinton campaign staffers have been moved onto the DNC's payroll as part of the process of coordinating with down-ticket efforts. That process is continuing and will include both field staffers and Clinton headquarters workers who are responsible for coordinating field organizing efforts, according to a campaign official.