Unfortunately, family name and tribe can hold more weight than this.They could enact a law that stipulates you have to be a resident for a number of years to run for office or buy land.
My grandfather held a seat in the Senate in Somaliland, and that seat has been passed down to one of his sons when he passed away. They live in Boroma and didn't want it, so its been passed down to a distant relative. I was specifically told that any of my brothers who live in Canada can easily come and claim that seat, simply due to lineage. Sounds wack, but it is what it is.