LA Times mentioned a few, seemingly mostly for Sanders by the big-membership numbers
On Thursday, United Teachers Los Angeles, the second-largest teacher’s union in the U.S., with roughly 34,000 members, threw its support behind the Vermont senator.
On Friday, Sanders joined representatives from the National Nurses United local office in Oakland to officially accept their endorsement. The union has more than 150,000 members nationwide.
The article also mentioned that this is a change since 2016 in some ways:
Labor unions have been wary about making endorsements after their early backing of Hillary Clinton in the 2016 presidential election caused rifts in some major unions between leadership and the rank and file.
It also mentioned that Kamala Harris has picked up an endorsement from a smaller union.
But how is the union tally looking so far? Is Sanders by far the leader in this respect?