Rounds Easily Defeats Democrat Challenger
South Dakota Sen. Mike Rounds easily fended off Democratic challenger Dan Ahlers.
Polls closed at 8 p.m. local time/9 p.m. ET.
Business Insider called the race in Rounds' favor.
Rounds won his Senate seat in 2014 after defeating his Democratic opponent by 21 percentage points.
South Dakota overwhelmingly voted for President Donald Trump in the 2016 presidential election.
Polls closed at 8 p.m. local time/9 p.m. ET.
Business Insider called the race in Rounds' favor.
Rounds won his Senate seat in 2014 after defeating his Democratic opponent by 21 percentage points.
South Dakota overwhelmingly voted for President Donald Trump in the 2016 presidential election.