Holmes was a resident of Hopkins and national secretary of World War Veterans.
Anderson was a resident of Crookston, Socialist nominee for the 8th CD in 1916, and Farmer-Labor nominee for Lieutenant Governor in 1942.
Christensen was a resident of Red Wing.
Calderwood was a resident of Minneapolis, former state chair of the Prohibition Party, and Prohibition nominee for HD 30 in 1894, HD 39 in 1904, 1906, 1908, and 1910, the at-large U.S. House seat in 1912, Governor in 1914, and the U.S. Senate in 1916 and 1918 (on the National ticket).
Keyes a hardware merchant from International Falls, former Mayor of International Falls, and Farmer-Labor and Democratic nominee for Tresurer in 1922.