Hmm. I wonder what the percentage would be if you ran the same poll in the US?
I think this would have the effect of preventing polarizing figures. If you were so polarizing a large portion of the population hated you...
I could imagine adapting the practice for modern sensibilities. Create a resort run by federal money out on the beach of some tropical island. Free food, drinks, games. It could double as a tourist attraction so there would be people to hang out with. If you win the ostracization vote you get a five year vacation on the state and all of your previous positions or titles are withdrawn.
This is to be attributed to the rise in inequality. The rich get richer, the poor get austerity.