A top Senate Republican crisscrosses campaign trail in 'make-or-break moment' to win back majority

EXCLUSIVE: GOP Sen. John Thune of South Dakota says he's stepping up his efforts on the campaign trail this year because "this is our golden opportunity" to win back the Senate majority.

"It’s kind of really a make-or-break moment for Republicans in the Senate. If we don’t get it done this time, the next two cycles aren’t great for us," Thune said in an exclusive national interview with Fox News. 

Thune, who as Senate minority whip is the No. 2 GOP lawmaker in the chamber, emphasized...