As the campaign of republican Presidential candidate Donald Trump founders, GOP control of the Senate could be at risk.
South Dakota Senator John Thune is the number three republican in the Senate, and expects republicans to keep control…………https://soundcloud.com/wnax-radio/john-thune-823a

Thune says there are a number of competitive Senate races this year….

Thune says he expects the margin in the Senate to be narrow in any case…..

Thune faces democrat Jay Williams in this falls Senate race.