Until last night, Murray was just another dour, bad-tempered Scot like the one who lives in 10 Downing Street. But now, Murray mania has hit Britain after his epic five-set victory last night – which pulled viewing figures of more than 10 million.

From being two sets down, Murray came back to win the match and get into the quarter finals – and is now declaring the he can win the title at Wimbledon. Just a little bit ahead of himself, I think.

This does have a certain parallel with the political situation at the moment – a dour, unliked Scot is way behind in the polls and fighting for his political life. But can Brown pull it out of the bag like Murray did last night?

Politics isn’t a sport, and it doesn’t just come down to the performance of the two centre-court players – but down solely to the choice of the people.

And unlike Murray, Brown doesn’t have the crowd on his side.