How John Thune is trying to save the Senate for Republicans

Politico.com - For more and to sign up click here McALLEN, Texas — John Thune is ramping up his sales pitch as he tries to turn the GOP’s attention toward November and keeping the Senate majority. But as the majority leader campaigned along the U.S.-Mexico border Friday with a coalition of Republicans up for reelection this year, he acknowledged challenges so far in promoting the legislative centerpiece of the…