<p>Republicans nominated state Sen. Larry Diedrich of Elkton today to run in the June 1 special election for South Dakota's seat in the House of Representatives.</p>
<p>Diedrich won the nomination on fourth ballot after two of the three Minnehaha County delegates pledged to him their support. That decision gave him enough votes to win and prompted the withdrawal of Larry Russell of Sioux Falls, a former aid to U.S. Rep. John Thune, who was the last of the seven challengers to step aside.</p>