And I think President Obama has seen now the difference between running for the presidency and serving in the presidency."

VOA: standard.2009.12.15

Romney, even as a candidate, should show some leadership, show he knows the difference between running an investment firm and leading a country.

FORBES: The Psychology of Envy: Romney's Big Fail

Mr Revill said there was a difference between free running and leaping off sea walls.

BBC: 'Tombstoning' by-law stops East Yorkshire's free runners

This time, there is a slim chance the choice of running mate could actually make a difference.

ECONOMIST: Be my number two