rosenberg was born on october 23, 1963 in new york city to peter and louise rosenberg. he attended the walden school (new york city) and then public schools in wilton, connecticut. he is a 1981 graduate of wilton high school, and a 1985 graduate of tufts university. in 1985 he moved to new york city to work for abc news, where he spent two years before joining the dukakis for president campaign in des moines, iowa. after dukakis’ loss in 1988, he moved back to new york to work as a writer/producer for linda ellerbee’s lucky duck productions. he left lucky duck in late 1991 to join the early bill clinton for president campaign in new hampshire. he went on to play a major role in the general election campaign, serving in the famous war room. in 1993 he moved from little rock, arkansas to washington, dc to work at the democratic national committee. he left the dnc in the fall of 1993 to join the democratic leadership council, where he worked until starting the new democrat network in 1996. the new democrat network ceased operating in late 2004 and evolved into ndn and the new policy institute, the organization rosenberg runs today.