When Naito wins the election he can be seen colouring in the eye of a Daruma doll. These paper dolls are used as a kind of good luck charm by people who are hoping to pass an exam or get elected. The idea is you colour in one pupil and if you can succeed then colour in the other pupil.
Onizuka hails from the north of Saitama which has an image of being in the middle of nowhere. He is so infatuated with Kyoto Maiko that he even changes his accent to sound like that of someone from Kyoto.