Ok so a bit of background: this story takes place in a universe where practically everyone can use a limited form of magic that uses runes. Limited, because everyone only has a certain amount of energy they can spend, and will die if they spend all of it. This means that things like singlehandedly levitating large boulders or regrowing limbs is impossible, and technology is used to fill in the gaps. Religion is really different too; the basic values and beliefs are pretty much uniform everywhere, and there are incorporated parts of Taoism and Shinto (so no major wars or conflicts over religion). Magical energy is like Chi, and there are spirits that preside over certain concepts or places.
Anyway, the story takes place generally in Europe during the late 19th century (like 1870-1880), and I had an idea of how the whole magic and religion things mentioned above might affect the politics of the British Isles, which is a pretty important setting. Seeing as England, Scotland, the Republic of Ireland, North Ireland, and Wales were united then under the United Kingdom of Great Britain and Ireland, things would be pretty much the same, but relations with Ireland would be a lot smoother with the general uniformity of religion. They would all have their own unique cultures and variations on laws, but would be ruled together. They still have some animosity between them because of differences in culture.
Each "state" has a quasi-governing family of its own, and a magical artifact picks the ruler from the heirs of those three or four (I haven't decided yet) families. There is a new selection every 50 years or so, and in the case of the ruler's death before their turn is up, the 2nd-in-line of the ruler's family gets the position. Does that make any sense? Or did I completely misread everything and make a totally implausible political system?