[2] In 1914 Hall announced his candidacy for the State House of Representatives from Maricopa County, running on the Bull Moose Party ticket.

[13][14] Hall and Wilkinson defeated O. S. Stapley, an incumbent, and H. A. Davis, who had served in the first Arizona State Senate, in the November general election.

[21][22][23] Hall declared his intention to run for re-election in July 1922,[24] and he faced off and defeated Wesley A. Hill in the Republican primary.

[27][28] Despite his statement that he was forever finished with politics, in 1926 Hall announced his candidacy to once again run for the State Senate.

[29] The two Republicans ran unopposed in the primary, but were defeated by Dan P. Jones and Harlow Akers in the November general election.

[33][34] In 1932 he ran for one of two seats on the State Tax Commission, going up against the two Democrat incumbents, Frank Luke and Thad M. Moore.

[35] In 1932 he ran for one of two seats on the State Tax Commission, going up against the two Democrat incumbents, Frank Luke and Thad M. Moore.

[39] In 1905 Hall and his brother Dick, along with C. H. Pratt and Charles Caldwell, the latter two both of Pittsburgh, Pennsylvania, developed the townsite of Salome, Arizona.

[40][41] The four men also incorporated the Arizona Contracting Company, which was formed to develop the townsite, as well as to engage in mineral exploration.

[42] In 1906 Hall was splitting his time between Wickenburg, where he had a home, and Salome, where he was appointed postmaster, with his brother Dick being vice-postmaster.

[45] Later that year, he and his father, Thomas, had begun a fruit farm in Maricopa County, southwest of Phoenix, named the Blue Ribbon Ranch.

[54][55] When the United States entered World War I, he volunteered for the army and served with the American Expeditionary Forces in Europe for nine months.

[2] He resigned from the State Senate in June 1918 and enlisted in the 27th Engineers Battalion, which saw action at both the Battle of Saint-Mihiel and the Meuse–Argonne offensive.

[68] While running his real estate practice, he still was involved in farming, becoming one of the largest fruit and pecan producers in the Phoenix area.