and there you have it: Koch brothers target Baldwin......
knew it was happening, just wanted to see it in black and white....... 
The billionaire Koch brothers are turning up the heat on vulnerable Senate Democrats in a move to pressure some of them to support the Republican tax-cut plan.
A group backed by billionaires Charles and David Koch is adding $1.6 million to its advertising attacks on Senate Democrats facing challenging 2018 re-election bids. Freedom Partners Chamber of Commerce said it plans to start running three week’s worth of television and digital ads against Senator Tammy Baldwin of Wisconsin beginning next Monday. She’s one of 10 Senate Democrats facing re-election next year from states won by President Donald Trump.
This latest round of political spending by a Koch-affiliated organization comes as the tax overhaul promised by Trump and GOP congressional leaders has taken center stage in Washington. Republicans set a goal of releasing the legislation on Nov. 1 and getting it passed by the end of the year, provided the House this week adopts a budget that’s already made its way through the Senate.
"It seems like the harder we work, the more Washington takes from us," one of the spots says. "Senators like Tammy Baldwin are the problem."
https://www.bloomberg.com/news/articles/2017-10-26/koch-brothers-target-baldwin-with-1-6-million-in-tax-attack-ads