That's an amazing dataviz and looks like a fish. However I'm not sure to understand the y axis. Why is it centered around the value of 700,000? I guess it would be better to simply hide the y-axis values since I think that they don't mean anything. Also representing abstention would also be very useful in my opinion. Are there some cities with abstention as a leader?

Thanks! That's a great point I totally missed - it's functions really more as a scale bar to measure by, but it should therefore look like that! I'll have to play around a bit to figure out how to add something that makes sense...