
Leavitt served as campaign manager for Republican Senate nominee Ed Gillespie in 2014 and GOP attorney-general nominee Mark Obenshain in 2013. Both suffered narrow losses in their campaigns.
“I believe Gov. Walker is the leader our country needs in the White House. He is a fighter, a winner, and he’s proven time and time again that he won’t back down in the face of a challenge,” Leavitt said in a statement.
“I look forward to the opportunity to build upon his already strong base of support, spread his winning message, and work toward victory in 2016.”