 Aldridge was a delegate to the Republican National Conventions of 1896, 1900, 1904, 1908, 1912, 1916 and 1920 where he put forth the name of his friend, Warren G. Harding, who was later elected President.He was appointed Collector of the Port of New York in 1921 by his friend President Warren G. Harding.In this role, "he had not become a particularly conspicuous figure."