Griffin was elected as a Democrat to the Ninetieth Congress, by special election, to fill the vacancy caused by the resignation of United States Representative John Bell Williams, and reelected to the two succeeding Congresses (March 12,1968--January 3,1973).
Griffin was elected as a Democrat to the Ninetieth Congress in a special election triggered by Williams' successful bid for governor of Mississippi. He was reelected to the two succeeding Congresses (March 12,1968--January 3,1973).