In 1988, Glassner served as
Bob Dole's traveling aide during Dole's presidential campaign. He held senior roles in Dole’s 1996 presidential campaign, Leadership PAC, and Senate offices in Kansas. In 1998, Glassner began working for the
Port Authority of New York & New Jersey, where he became the senior advisor and eventual Chief of Staff to then-Chairman
Lewis Eisenberg. In 2001, he became Senior Vice President for External Affairs for IDT Corporation, where he oversaw government relations, communications, and investor relations. Glassner served as an advisor to the
George W. Bush 2000 presidential campaign, and later as director of vice-presidential operations for the
John McCain 2008 presidential campaign. In 2014, Glassner served as southwest regional political director of AIPAC. In 2015, Glassner was hired by the Trump campaign to serve as political director and was later named deputy campaign manager. In January 2017, President-elect Donald Trump named Glassner as COO of the Donald Trump 2020 presidential campaign. On December 15, 2020, Trump appointed Glassner to the
United States Holocaust Memorial Council. Glassner has also served as a member of the Board of Directors for the American Red Cross of Northern New Jersey and the Board of Advisors for the
Rutgers Business School – Newark and New Brunswick. == References ==