In 1956, Kennedy moved his growing family outside Washington to a house called Hickory Hill, which he purchased from his brother John. This enormous 13-bedroom, 13-bath home was situated on in McLean, Virginia. Kennedy went on to work as an aide to Adlai Stevenson during the 1956 presidential election which helped him learn how national campaigns worked, in preparation for a future run by his brother, Jack. Unimpressed with Stevenson, he reportedly voted for incumbent Dwight D. Eisenhower. Kennedy was also a delegate at the 1956 Democratic National Convention, having replaced Tip O'Neil at the request of his brother John, joining in what was ultimately an unsuccessful effort to help JFK get the vice-presidential nomination. Shortly after this, following instructions by his father, Kennedy tried making amends with J. Edgar Hoover. There seemed to be some improvement in their interactions, which came to be seen as "elemental political necessity" by Kennedy. This later changed after Kennedy was appointed attorney general, where Hoover saw him as an "unprecedented threat".