In Japan, anything but political dynasties would be seen as „not normal“ by the voters. Politician is a family business like an Udon restaurant - the eldest son of a politician is expected to become a politician, too. And many of these dynasties go back to feudal times or earlier. In Japan, I heard more that once about some scandal-addled politician that „he comes from a samurai family“. That means he’s above law in the Western sense. What ever bad thing such a person does - a showy apology and a deep bow will heal all wounds with the majority of voters.