Source for Popular Vote data: North Dakota Secretary of State. OFFICIAL ABSTRACT OF VOTES CAST AT THE GENERAL ELECTION HELD NOVEMBER 4, 1958, North Dakota Secretary of State (https://vip.sos.nd.gov/pdfs/Abstracts%20by%20Year%5C1950s%27%20Election%20Results%5C1958%5CGeneral%20Election%2011-04-19) (accessed 02 Mar 2012)