I think I caught a typo:
“We on the left will be their first target, I can assure you. Which is why we must steel ourselves for the coming battle. We are not going down without a fight like our German comrades. 1934 might well be the deceive year in the international fight against fascism. The year the left decides to stand up and be counted. Solidarity will lead that fight and we will be victorious!”
Should that be decisive?
Also, the von should not be capitalized as it is not really a name or a noun rather. If you want to get crazy on German sounding surnames do something like this: Alfred Maximilian Ludwig von der Freistadt zu Danube.
You don’t say. 
Mussolini and possibly Hitler were left-leaning socialists at one point in time but turned around fairly quickly. Good point nonetheless, just wondering if it was possible even if it proves to be a sub-optimal choice.
My Cunarian MC would be that minus the hardcore since he can compromise with liberals and maybe socialists (or equivalents). He is accurately described as a social conservative, so you probably would like him the least.
My Wulframite leans right but is fairly liberal in some regards since he likes the middle class. He takes care of his subordinates/workers so I could see him supporting some socialist policies.
My Aetorian is a royalist but he would be willing to compromise with liberals and socialists just to further military goals, and he doesn’t care all too much about governance (his focus is military) until republicanism starts getting significant traction. He is the most likely to stand by the king to the last.
My Salt Coast MC is the most likely to be a republican but he hasn’t rejected monarchism just yet. I haven’t finalized many details about him though, except that he his cynical and mildly ruthless.
A much reasonable course of action than what your XoR MC is planning to do, therefore I support it. Seriously, he is the only one of your MCs that is on my dislike list and he ranks pretty high in it.