Can Citizen United be Used to Strengthen Unions?

In the Act 10 ruling, a handy boost from, of all places, the Citizens United case

https://www.uppitywis.org

Being Used to Strengthen Unions: Aside from the ruling itself, which is an important if partial win for Wisconsin public employee unions, one of the most interesting aspects of Federal Judge William Conley’s order overturning two key aspects of Act 10, Gov. Walker’s anti-union law, is a key precedent he cited in favor of the unions