Did you ever read Terry Pratchett's The Last Continent? A native of the last-continent (fictionalized Oz) says they put their politicians in jail right after they're elected - it saves time.
There's a town in Afghanistan where they could never agree on their rules of hospitality. Consequently they all decided that no guests would be allowed, and if someone tried to get into the town they'd just kill him.
My idea is to allow Congress-critters only one term, but during that term they get to cheat, mess with interns, run around on their spouses, steal the public's money, and raise general cain, but at the end of the term we take them out and execute them.
I have no doubt there'd never be a shortage of candidates for public office! Probably many of the same ones we have now.