@b870d4c8 @c88dc264 Exactly. I'm pretty sure that the reason both the Labour and Tory parties campaigned against AV for the 2011 UK referendum was not because of any immediate effects it would have had (very little) but the realisation that with AV both parties would eventually split up. In retrospect we can see that would probably have been over Brexit. 

 @573d6b89 @c88dc264 that's an interesting point, that AV might change how politicians feel about the threshold for striking out on their own, as several did over the last 10 years but disappeared.