BIG SANDY, Mont. — Under a nearly cloudless sky on the sun-speckled northern prairie last Tuesday, Jon Tester, this state’s senior senator, had his hands deep inside a 25-year-old grain auger. In Washington, the White House was letting it be known that President Trump was planning a summertime blitz against Democrats running for re-election in … Continue reading Jon Tester, a Democrat in Deep-Red Montana, Isn’t Sweating Trump’s Threats