Jacobin has this article by two Bernie Sanders supporters, Bhaskar Sunkara and Micah Uetricht, attacking the Working Families Party’s process for endorsing a presidential candidate. A few days ago the Working Families Party endorsed Elizabeth Warren. The article claims the process was opaque and unfair.
I guess these two did not complain about the WFP endorsement process in 2016.
The Jacobin mag website has several articles criticizing Elizabeth Warren, including two contrasting her with Sen. Bernie Sanders. See this especially:
https://www.jacobinmag.com/2019/01/elizabeth-warren-bernie-sanders-socialism-progressives
Jacobin magazine is pretty marginal, so it will be interesting to see if other left groups and publications take a similar line against Sen. Warren, who looks like more likely than Bernie Sanders to get the Democrat nomination.
Did Bernie Sanders endorse any Working Families party candidates, the way Warren did?