 In redistricting following the 1980 United States Census, Forsythe was shifted to New Jersey's 13th congressional district, where he was elected for a single term in office.Forsythe died at the age of 68 at his home in Moorestown Township on March 29, 1984, due to lung cancer.His remains were cremated and his ashes interred at Union Street Friends Cemetery, Medford, New Jersey.