the usual winner is a brother of the existing ruler (anyone with a strong claim) as the claim wont pass to your son until you're dead, so expect to be jumping back and forth between 2-3 lines of your family.

Tanisty is sort of like seniority, but it is a vote system but only your family members. Seniority is good for keeping it all in the family, however you will change leaders quite often as the vast majority will be old, meaning you need to ensure all your brothers etc are married early else you will run out of heirs through lack of paying attention. Those 2 are considered the 'faceroll' inheritences.Д®lective monarchy can be okay in a small kingdom where you control all the votes (gaming the system) but in a larger kingdom/empire it can put your title at risk if your vassals don't like you. The 'easiest' is agnotic-cognotiv primogeniture which is oldest son gets everything and if there are no sons, then your first born daughter.ДЄlternatively you have ultimogeniture which is youngest son.

Crusader kings 2 best inheritance law