Gregory Jaczko is a candidate running in the Democratic primary for U.S. House Non-Voting Delegate for the District of Columbia on June 16, 2026. He previously served as Chairman of the U.S. Nuclear Regulatory Commission (NRC) from 2009 to 2012, and as a Commissioner from 2005 to 2009. Prior to his role at the NRC, Jaczko worked as a Congressional Science Fellow in the office of U.S. Representative Ed Markey and advised the United States Senate Committee on Environment and Public Works. He also served as appropriations director and science policy advisor for U.S. Senator Harry Reid. Follow Gregory Jaczko to get updates on their trades.