The stated total for Overholt is 4,090 but the county figures add up to 1,739. Overholt's stated figure in Denver County is almost certainly wrong, but there's probably at least one other misprint for him in the county figures as changing 325 to either 3,025 or 3,205 does not correct the error on its own.
Source for Popular Vote data: Colorado Secretary of State. Abstract of Votes Cast at a General Election Held on Tuesday, November 5th, A.D. 1940, Colorado Secretary of State (https://www.sos.state.co.us/pubs/elections/Results/Abstract/pdf/1900-1999/1940AbstractBook.pdf) (accessed 12 Dec 2023)