Romney won the presidential debate by looking presidential. Obama had a painful case of Biden's smile ......

But here’s why it was also a vote loser. For a start, Twitter immediately lit up with examples of how the US Army does still use horses and bayonets (horses were used during the invasion of Afghanistan). More importantly, this was one example of many in which the President insulted, patronised and mocked his opponent rather than put across a constructive argument. His performance was rude and unpresidential. Obama seemed to have a touch of the Bidens, wriggling about in his chair, waving his hands dismissively and always – always – smirking in Romney’s direction.