In 2001, he co-founded The Harbour Group, a public relations company, before leaving to join John Kerry's presidential campaign.
[2] In 1994, Johnson assumed the role of executive director of the Democratic Study Group, a legislative service organization in the House of Representatives.
[2][3] In 1996, Daschle named Johnson the staff director of the Senate Democratic Leadership Committee, specializing in policy and communications strategy.
[9] He took a leave of absence from The Harbour Group in 2004 to join the communications team of John Kerry's presidential campaign.
[10] He established the firm's government affairs practice,[11] whose clients have included the Recording Industry Association of America, Nextel Communications,[12] and Sodexho Alliance.