Adam Parkhomenko, the co-founder of “Ready for Hillary” and a lifelong supporter of defeated Democratic presidential candidate Hillary Clinton, is being endorsed by three former chairmen of the Democratic National Committee for a role in the party’s leadership. Virginia Gov. Terry McAuliffe, former Pennsylvania governor Edward G. Rendell and longtime South Carolina party operative Don Fowler will announce their endorsements Monday.

The DNC is electing a new leadership team next month.