I really beleave the prereq for becoming a politician is one( or more) of the fallowing:
Started a biz, it failed
Spent your entire "adult life" in school.
weak back so you could not dig ditchs
Have some type of minor notarity(News anchor for example, related to some one famous also works.. Cough kenndy, cough... damn cold.

)
Just a LAZY SOB and think work sucks.
Got your money the old fashion way... you know, pulled from the right croch.
I'm sure I will come up with more latter.