As long as its an election, becoming a statesman isn't decided by how good you are at your job, but how good you are at winning popularity contests. And all measures put in place would would get dismantled eventually.
I believe a true democracy would be better - a lottery. Go up to the box, put your name in, lots are drawn randomly and you have your council/senate/whatever. Terms limited to 2-6 years.
A randomly chosen group without overall malicious intentions will always be more effective than a group of educated, elected, "representatives".
