President Truman, symbolizing a broad-based desire for an Eisenhower candidacy for president, again in 1951 pressed him to run for the office as a Democrat. It was at this time that Eisenhower voiced his disagreements with the Democratic party and declared himself and his family to be Republicans. A "Draft Eisenhower" movement in the Republican Party persuaded him to declare his candidacy in the 1952 presidential election to counter the candidacy of non-interventionist Senator Robert A. Taft. The effort was a long struggle; Eisenhower had to be convinced that political circumstances had created a genuine duty for him to offer himself as a candidate, and that there was a mandate from the populace for him to be their President. Henry Cabot Lodge, who served as his campaign manager, and others succeeded in convincing him, and in June 1952 he resigned his command at NATO to campaign full-time. Eisenhower defeated Taft for the nomination, having won critical delegate votes from Texas. Eisenhower's campaign was noted for the simple but effective slogan, "I Like Ike". It was essential to his success that Eisenhower express opposition to Roosevelt's policy at Yalta and against Truman's policies in Korea and China—matters in which he had once participated. In defeating Taft for the nomination, it became necessary for Eisenhower to appease the right wing Old Guard of the Republican Party; his selection of Richard M. Nixon as the Vice-President on the ticket was designed in part for that purpose. Nixon also provided a strong anti-communist presence as well as some youth to counter Ike's more advanced age.

Who was President of the United States prior to Eisenhower?