Breckinridge was elected to a second, non-consecutive term as Attorney General of Kentucky in 1967. Breckinridge won the office although the Republican ticket, led by Louie B. Nunn, won the governorship and the office of secretary of state. Breckinridge served his second term as Attorney General of Kentucky from 1968 to 1972. As his second term wound down, Breckinridge again ran for lieutenant governor in 1971 but lost again in the Democratic primary, this time to the Speaker of the Kentucky House of Representatives Julian Carroll.