Entire post explains it well so please read if you have time. Text highlighting mine.

Justice Scalia was to have ruled on this had he lived. 

SUPREME COURT GRANTS CERT IN HISTORIC EMPLOYEE FREEDOM CASE

"While rich leftists are often assumed to be the main supporters of the Democratic Party, it is public sector unions that provide the lion’s share of the Democrats’ funding. They take money involuntarily from their members, a large majority of whom have never even voted on whether to be represented by a union, and many of whom disapprove of the union’s agenda, and recycle that money into left-wing causes, Democratic Party candidates, and inflated salaries for countless union officials. The entire system is the number one form of corruption in American public life.

If, as expected, Justice Gorsuch casts the decisive fifth vote in favor of Mark Janus, that cycle of corruption will come to a screeching halt. All public employees in the U.S. will, in effect, be treated as though they were in a right to work state. Those who don’t want to be represented by the union, or support it, won’t have to. The effect on the public sector unions, and the Democratic Party, will be devastating, as we have seen in Wisconsin. When teachers and other public employees aren’t required by law to support Democratic Party unions, they desert them in droves....."

http://www.powerlineblog.com/archives/2017/09/supreme-court-grants-cert-in-historic-employee-freedom-case.php