Rose has been a longtime Democratic Party fundraiser and activist. He was a co-founder of the National Jewish Democratic Council in 1990, and in 1992, he was appointed to Democratic National Convention Site Selection Committee and was a member of New York 1992 Convention Host Executive Committee. In 2000, he was a member DNC National Convention Rules Committee. Rose was an Alternate Delegate for the 2004 Democratic National Convention held in Boston. He also served as Finance Chairman of the Democratic Party of Connecticut in 1993.