A political action committee is committing more money to the US Senate race in South Dakota. A PAC known as Mayday is adding $250,000 to its earlier pledge of $1 million.
The money is going to media time to support Democrat Rick Weiland. He faces Independent Larry Pressler, Republican Mike Rounds, and Independent Gordon Howie in the race for United States Senate. One political scientist says he expects more national attention as poll numbers show a close competition.