South Dakota is governed under its 1889 constitution. The legislature consists of 35 senators and 70 representatives, all elected for two-year terms. The governor is elected for four years. William Janklow, a Republican who had previously held the office from 1979 to 1987, was elected governor in 1994 and reelected in 1998. He was succeeded by fellow Republican Mike Rounds, elected in 2002 and reelected four years later. In 2010 Dennis Daugaard, also a Republican, was elected governor. The state sends one U.S. representative and two senators to the U.S. Congress and has three electoral votes.
Institutions of higher learning in South Dakota include Augustana College, at Sioux Falls; Northern State College, at Aberdeen; the South Dakota School of Mines and Technology, at Rapid City; South Dakota State Univ., at Brookings; and the Univ. of South Dakota, at Vermillion.