Candidates' party affiliations obtained from the 11/23/1904 Weekly Courier (of Fort Collins). https://www.coloradohistoricnewspapers.org/?a=d&d=TWC19041123.1.1&e=-------en-20--1--img-txIN%7ctxCO%7ctxTA--------0------
Source for Popular Vote data: Colorado Secretary of State. Abstract of Votes Cast for Secretary of State at the General Election in 1904, Colorado Secretary of State (https://www.sos.state.co.us/pubs/elections/Results/Abstract/pdf/1900-1999/1904AbstractBook.pdf) (accessed 11 Dec 2023)