There's a snowball's chance of Calexit succeeding (by the way, there was snow in the Middle East in 2015 and in the Sahara desert in 2016), if, for no other reason that secession would require a Constitutional amendment. Now it turns out that some elements in Russia have given financial support to Calexit: [bold added]
The man behind a campaign to make California its own country is receiving support in Russia from a far-right nationalist group that wants to break up the United States.There's no question that a United States without California would be substantially weaker. Also, standalone California would confront a raft of problems that it is not remotely equipped to handle. It's obvious why Calexit would attract Russian support; now that the support has been revealed, passage is even more unlikely.
Yes California President Louis Marinelli, who is living and teaching in Russia, has partnered and received financial support from the Anti-Globalization Movement of Russia, a Kremlin-supported political group that opposes a handful of countries, such as the United States, having a majority of the world’s political clout.
Progressives say that Russian support of Donald Trump helped him win. Ironically, Russian support of a progressive initiative will help it lose.