Labor Unions have been preparing for the inevitability that they will lose a substantial amount for their funding for political organizing and elections. Today, the US Supreme Court ruled on a 5-4 decision that employees cannot be compelled to pay union fees as a condition of employment. In the case Janus v. AFSCME brought by Mark Janus, an Illinois child support specialist, the court ruled, forcing him to pay fees to cover the cost of collective bargaining violates his First Amendment rights because collective bargaining is an inherently political activity.
This means the 2018 election will be the last where union support is as significant because money means influence.