I'm also curious about your source on the last category being most common. If by "most common" you mean "affecting most voters worldwide", it's possible a numb

I'm also curious about your source on the last category being most common. If by "most common" you mean "affecting most voters worldwide", it's possible a number of high-population countries with flagrant corruption in elections may bias this figure, but overall—particularly in, say, West Virginia (which I guess is what inspired this comic)—I would imagine the 3rd category would be the least prevalent, particularly as it's the easiest to detect.