@Francoist Almost every PnW alliance is a dictatorship of one form or another, though many do not style themselves as such. Those that do have "elections" generally have them once the leader needs to step down for some reason. If that is the fascism you are looking for, just browse the alliance page and pick one and you should do OK.
If you want an alliance themed after Franco, Mussolini, or Pinochet, I do not think you will find such an alliance. I would be pretty confident that Franco or Pinochet theme would not be against the rules, and I believe that to be the case for Mussolini as well. Contact Alex and ask if you are concerned.
Also remember that while those might not be against the rules (check with Alex), you may find it hard to make allies given that the population of the server is generally strongly anti-fascist, as you've seen in the conversations above.
As per the rules, https://politicsandwar.com/rules/ , Nazi-esque things are not allowed and you'll likely be reported and banned if you use them.