Official source omits data for Perkins County. These returns have been calculated by subtracting the total vote of the remaining counties from the statewide sum listed by source.
Source for Popular Vote data: South Dakota Department of Finance. South Dakota Legislative Manual 1963, South Dakota Department of Finance (http://dm16384.contentdm.oclc.org/cdm/compoundobject/collection/p15307coll3/id/68632/rec/31) (accessed 29 Dec 2015)