Paul Tonko (born June 18, 1949) is a United States representative for New York's 20th congressional district. Tonko is a Democrat and has represented the district since 2009. When Tonko became a congressman, New York's 20th congressional district was part of New York's 21st congressional district and Tonko also represented that. But the districts were changed and he became the congressman for the 20th district. Tonko was also a member of the New York State Assembly before and was the Chief executive officer of New York State Energy Research and Development Authority.