Source for Popular Vote data: North Dakota Secretary of State. State of North Dakota, 1913 Legislative Manual, North Dakota Secretary of State (http://books.google.com/books?id=8PVPOsL8Uv0C&printsec=frontcover&source=gbs_v2_summary_r&cad=0#v=onepage&q=&f=false) (accessed 31 Mar 2010)