Each nation is unique but there's one thing many have in common here, they are designed to have ministers for the new parties and therefore using the ministers who have the following traits will indeed drift the state towards that path it's based on.

-nihilist_revolutionary

-monarchist_advocate

-nazi_agitator

-nazbol_fanatic

But sometimes that doesn't always work, you'll need to follow focuses specifically to get what you desire for said country. Each new party have their own rules, some can puppet, some can't, take into consideration that it's designed to add flavor to the vanilla game, almost like chocolate syrup and or sprinkles on white ice cream.

Also if you encounter missing and bugged parties, please report them as I am doing bug repairs as we speak.