You could be forgiven for believing that London has only been electing a Mayor this week. There was also an election for the London Assembly, elected by a form of proportional representation. And one of the results is a horrific breakthrough:
The British National Party have won a seat through the party list system. For the next four years Londoners will have representing them on the Assembly Richard Barnbrook, a member of a facist & racist party with fringe support.
This is what proportional representation means. There are many reasons why the Assembly needs the election system overhauled (if the Assembly isn't abolished outright), but this is easily the most pressing.