#2 – Heather Stone
Helping Mook in the campaign is a long-time colleague, Heather Stone. Stone, who is among the staffers featured in the campaign’s Pride Video, serves as the operation’s chief of staff. In that role, Stone is responsible for making sure that the various departments within the campaign work well together. It’s a behind-the-scenes position, but one with a lot of influence. Stone had previously served as deputy national political director at the Service Employees International Union, which may have helped Clinton secure the 2 million-member union’s endorsement last November.