SIOUX FALLS, S.D. (AP) _ U.S. Rep. Tom Daschle unseated freshman GOP Sen. Jim Abdnor on Tuesday, and another Democrat captured the state's only congressional seat.

George Mickelson kept the governor's office for the GOP, defeating farmer Lars Herseth. Both are sons of former governors.

Incumbent Gov. Bill Janklow, barred from seeking a third term, had challenged Abdnor in the GOP primary.

Daschle pledged to immediately seek a seat on the Senate Agriculture Committee and begin working to improve grain prices for farmers.

In the race for the state's lone congressional seat, Democratic lawyer Tim Johnson defeated Republican restaurant owner Dale Bell.

In the Senate race, with 67 percent of precincts reporting, Daschle had 52 percent, or 100,580 votes, to Abdnor's 48 percent, or 93,444 votes.

With the same number of precincts reporting, Mickelson had 52 percent, or 101,337 votes, while Herseth had 48 percent, or 93,061 votes in the governor's race.

In the congressional race, Johnson had 113,510 votes, or 60 percent, to Bell's 75,443, or 40 percent, with 67 percent of the precints counted.

Voters also appeared to approve a constitutional amendment to allow a state lottery by a 64-36 margin.