I saw, that there was a sports book event on the election last year for Hillary/Trump, however, there are not any sports book events for any other country than the United States. Therefore, I am recommending that the British Election be added to sports book!
Why? This is in my opinion a great idea, gives an interest in politics. If it is because you don't want to go to the lengths of research I'll happily help you
+1 I'd like this to happen as you did some kind of bet on Hilary Clinton and Donald Trump this is just as important. It would earn you a lot of money too