The 1968 United States Senate election in Kentucky took place on November 5, 1968. Incumbent Republican U.S. Senator Thruston Morton retired from office. Jefferson County Judge (the equivalent of a County Executive) Marlow Cook won the open seat. Republican primary Candidates Marlow Cook, Jefferson County Judge Eugene Siler, former U.S. Representative Thurman Jerome Hamlin, perennial candidate E. W. Kemp Results Democratic primary Candidates Katherine Peden, Commissioner of Commerce John Y. Brown Sr., former U.S. Representative Foster Ockerman, former State Representative Ted Osborn, State Representative Results General election Results See also 1968 United States Senate elections References 1968 Kentucky United States Senate