I was in a taxi in Edinburgh this morning, and got talking to the driver, as you do. “Who are you going to vote for,” I asked after a while.

“I’ve always voted Labour, but I don’t think I’m going to this time,” he replied.

“I imagine it’ll be the SNP then,” I suggested.

“Never, ever. No, I think Cameron has done a good job in turning round the economy, so I might go for him.”

“Well I wasn’t expecting that,” I said. “Which constituency do you live in?”

“Gordon Brown’s.”