Source for Popular Vote data: Wisconsin Secretary of State. Wisconsin Blue Book, 1942, Wisconsin Secretary of State (http://digicoll.library.wisc.edu/cgi-bin/WI/WI-idx?type=turn&id=WI.WIBlueBk1942&entity=WI.WIBlueBk1942.p0678&isize=XL) (accessed 19 May 2010)