At the 1956 Democratic National Convention, Stevenson surprised everyone: He announced that he would let convention delegates pick his running mate in an open vote. What followed was a thrilling one-day vice presidential campaign featuring the likes of Tennessee Sens. Estes Kefauver and Albert Gore, Sr., Minnesota Sen. Hubert H. Humphrey, Texas Sen.Lyndon B. Johnson, and Massachusetts Sen.John F. Kennedy. (Kefauver won on the third ballot.) Stevenson's unexpected move energized the party, generated loads of media coverage and created excitement well beyond the convention, though it was ultimately not enough for him to defeat the incumbent president, Dwight Eisenhower.