This is the laughometer from the Coop leadership hustings in Brixton on the evening of Wednesday 30 June.

As usual, tiny chuckles weren’t recorded.

We maintained our rule that to score you had to get a proper laugh from a significant portion of the room.

Diane Abbott – 2

David Miliband – 1

Ed Balls – 1

Ed Miliband – 1

Andy Burnham – 0

Taken by an experienced laughometer operator, these are by far the lowest scores so far. Lambeth is clearly not for laughing.