With 761 of 768 precincts counted, Daugaard had 51 percent of the vote to 18 percent for Brookings Mayor Scott Munsterman, 16 percent for state Senate Majority Leader Dave Knudson, 12 percent for state Sen. Gordon Howie, a Tea Party hopeful, and 4 percent for Ken Knuppe, the Sioux Falls Argus Leader reported.
In the state's congressional race, state Sen. Kristi Noem was headed for an apparent victory with 42 percent, to 35 percent for Secretary of State Chris Nelson and 23 percent for state Sen. Blake Curd. With a primary win, she will face Democratic incumbent Stephanie Herseth Sandlin in November. Sandlin was first elected in a special election in 2004.
Daugaard will face Democrat Scott Heidepriem, the lone candidate on the party's primary ballot Tuesday. Heidepriem has tapped Republican Ben Arndt as his running mate for lieutenant governor. If the Heidepriem-Arndt ticket makes it through the general election, it would be a state first, The (Mitchell) Daily Republic reported recently.
Gov. Mike Rounds, a Republican, is retiring after two terms.
Republican U.S. Sen. John Thune faced no opposition in the primary and no Democratic candidate was listed.