Walker was elected just over three months ago on the heels of an exceptionally expensive gubernatorial race in the Badger State, fueled by groups funded by the Koch brothers, David and Charles. David Koch, the son of a radical founding member of the John Birch Society, which has long been obsessed with claims about socialism and advocated the repeal of civil rights laws, personally donated $1 million to the Republican Governors Association (RGA) in June of last year. This was the most he had ever personally given to that group. (Fellow billionaire Rupert Murdoch matched Koch's donation to the RGA with a $1 million donation from his company News Corporation, parent company of FOX "News" Channel.)
The RGA in turn spent $5 million in the race, mostly on TV ads attacking Walker's political opponent, Democratic Mayor Tom Barrett. As this photo shows, the RGA described itself as a "key investor" in Walker's victory. In its congratulations, the RGA notes that it "ran a comprehensive campaign including TV and internet ads and direct mail. The series of ads were devastating to Tom Barrett ... All told, RGA ran 8 TV ads and sent 8 pieces of mail for absentee, early voting, and GOTV, totaling 2.9 million pieces."
The Center for Media and Democracy reported on some of the RGA's spin-filled ads last November, including the ads against Barrett, and filed a snapshot report this week. As the RGA takes credit, its multi-million dollar negative ad campaign probably did help make the difference between the 1.1 million votes cast for Walker against Barrett's 1 million votes. According to Open Secrets, Koch Industries was one of the top ten donors to the RGA in 2010, giving $1,050,450 to help with governors' races, like Walker's.
As Mother Jones has noted, the Koch Industries' political action committee, KochPAC, gave Walker's campaign $43,000 directly (according to the Wisconsin Government Accountability Board). It may seem like a small amount compared with the millions the Kochs are spending funding the RGA and other groups, but that donation was one of the larger individual donations to Walker not from an expressly-named partisan PAC. It is, however, a drop in the bucket compared with the impact of a million-dollar negative ad campaign, especially because the candidate promoted by the mud-slingers does not have to get his hands dirty.