There has to be dirt on Tester. POTUS is directly calling on him to resign and it's not just bc he made stuff up about Dr. Ronny.
Not MBS
Google: Jon Tester Scandal
It gives you several articles you can dig about his dirt.
The ad then ties Tester to four Democratic figures Republicans frequently use as bogeymen in campaign messaging: Sens. Elizabeth Warren and Bernie Sanders, House Minority Leader Nancy Pelosi and former President Obama. It criticizes Tester for voting against a short-term government funding bill last month, saying he joined Warren to shut down the government and sided with Sanders "to put illegal immigrants over sick kids in Montana." Tester has said his vote against the funding bill was not about immigration, but because the bill lacked funding for community health centers in his state.
The ad also criticizes him for siding with Obama at a higher rate than President Trump, saying he voted with Obama 93 percent of the time but – according to tracking data from the website FiveThirtyEight – voted with Trump 37 percent of the time.
https://www.google.com/amp/s/www.realclearpolitics.com/articles/2018/02/06/mcconnell_super_pac_targets_jon_tester_136202.amp.html
MUAHAHAHAHAHA FLYTESTERFLY!