The Dims always have fantasies that this time their secession will succeed and they’ll be able to go back to enslaving the masses.
I don’t think leftists want secession but I do think they want to enslave the masses. Leftists cant stand when there are choices, or places for people to go to escape their control. They want to push their marxism on everyone, because if there are safe havens for hard working free people to go to, the hard working, liberty-loving, capitalist types will all flock there, and all the deadbeat socialists will be left behind and if no one is working and everyone is a leftist deadbeat on the dole, there will be no one to tax.
These Democrats are the liberals living in New York, Boston, Washington DC, Chicago, Los Angeles and so forth.
In the 1860s, these liberals were called "Republicans", but they were still living in New York, Boston, etc.