What is significant in these elections is that Democrats needed to gain three seats to guarantee a majority in Wisconsin. They failed at that. They gained two seats, not 3. That is a victory, but not a big victory. Republicans can certainly claim they held off the onslaught. Their big money made a difference.
Point one: Examinations of the Republican races shows that in 5 of the 6 races Republicans, whether they won or lost, performed below the normal expectations for those districts. Republicans lost ground, serious ground, in 5 of the 6 districts.
Point two: the union-stripping bill was passed last winter by the Republicans in the Senate. It was not a unanimous vote however. One Republican Senator was quite vocal about his opposition to it and has made it clear that he is still against the legislation. Suddenly that third seat that Democrats needed to flip has... been flipped.
Conclusion: Republicans in Wisconsin, and everywhere else, got a cold water shower Tuesday. Kasich is already trying to revoke the union-stripping bill he passed in Ohio.
Tuesday was a badly needed win for Democrats, unions, and the middle class.