Both Vandenberg and Warren were highly popular in their home states, but each refused to campaign in the primaries, which limited their chances of winning the nomination. Their supporters, however, hoped that in the event of a Dewey-Taft-Stassen deadlock, the convention would turn to their man as a compromise candidate. General MacArthur, the famous war hero, was especially popular among conservatives. Since he was serving in Japan as the Supreme Commander of the Allied Powers occupying that nation, he was unable to campaign for the nomination. He did make it known, however, that he would accept the GOP nomination if it were offered to him, and some conservative Republicans hoped that by winning a primary contest he could prove his popularity with voters. They chose to enter his name in the Wisconsin primary.