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HDMK is an American strategic communication lobbying firm based in Washington, D.C., whose partners were originally four Republican communication professionals: [1] [2] Terry Holt, Trent Duffy, Jim Morrell and Chad Kolton.
The group aided the Special Operations OPSEC Education Fund. [3]
In 2013, the firm was reorganized. Morrell and Kolton quit, while Democratic operative Mike Hacker became partner. [4]
