The slime we call politicians

I am sick of politicians, especially the South African variety, we have a corrupt system that allows politicians to "walk over" to another party.
This makes for disgust and contempt by voters, we vote for Mr X and he wins his election just to cross over at a later stage when the other party winks at him.
This system brings out the slime in politicians who at best are the lowest of the low as far as I am concerned.
Anyone can be a politician and the pay and perks are astronomical, as far as I know we are the only country that gives medical benefits to politicians and pays them a pension when they get voted out!
It sucks...