He resigned as governor to serve in the United States Navy during World War II, becoming an aide to Admiral William Halsey Jr. After the war, he became president of the University of Pennsylvania, holding that position from 1948 to 1953. Stassen sought the presidential nomination at the 1948 Republican National Convention, winning a significant share of the delegates on the first two ballots of the convention, however he lost to Thomas Dewey. So he tried again, and again, and again, and again…