No state officer may appoint as a deputy any other state or district officer. No state treasurer may appoint as a deputy any county treasurer, register of deeds, sheriff, or county commissioner. Source: PolC 1877, ch 6, § 4; CL 1887, § 1400; RPolC 1903, § 1819; RC 1919, § 7047; SDC 1939, § 48.0403; SL 1969, ch 195 ; SL 2010, ch 19 , § 5.