Navy. In 1945 he served on the committee that created the United Nations. Stassen was widely regarded as the most liberal of the Republican candidates, yet during the primaries he was criticized for being vague on many issues. Stassen stunned Dewey and MacArthur in the Wisconsin primary; Stassen's surprise victory virtually eliminated General MacArthur, whose supporters had made a major effort on his behalf. Stassen defeated Dewey again in the Nebraska primary, thus making him the new frontrunner. He then made the strategic mistake of trying to beat Taft in Ohio, Taft's home state. Stassen believed that if he could defeat Taft in his home state, Taft would be forced to quit the race and most of Taft's delegates would support him instead of Dewey. Taft defeated Stassen in his native Ohio, and Stassen earned the hostility of the party's conservatives. Even so, Stassen was still leading Dewey in the polls for the upcoming Oregon primary. Dewey, however, realized that losing another primary would end his chances at the nomination, and he decided to make an all-out effort in Oregon. In April 1948, Dewey sent Paul Lockwood, one of his top aides, to build a strong grassroots organization in the state. Working with $150,000 sent by Dewey's powerful New York political organization (three times the previous record spent in an Oregon primary), Lockwood paid "for 126 billboards, hundreds of sixty-second radio spots on every station in the state, and half-hour broadcasts each noon...The daily Portland Oregonian carried five Dewey advertisements a day." Dewey also extensively campaigned in Oregon, spending three weeks in the state. He "invaded every hamlet, no matter how isolated, speaking at rural crossroads and shaking hands in hamburger stands. One journalist commented that Dewey was the greatest explorer of Oregon since Lewis and Clark." Dewey also agreed to debate Stassen in Oregon on national radio. Held on May 17, 1948, it was the first-ever radio debate between presidential candidates. The sole issue of the debate concerned whether to outlaw the Communist Party of the United States. Stassen, despite his liberal reputation, argued in favor of outlawing the party, stating his belief that a network of Soviet-directed Communist spies "within the U.S. demanded immediate, and punitive, response...Why did Dewey oppose such a ban? Stassen wanted to know." "We must not coddle Communism with legality", Stassen insisted. Dewey - while criticizing Communist totalitarianism and Soviet actions in the Cold