"A 'one percent swing' would make it 50.89% Leave, 49.11% Remain.
Perhaps our resident ex-teacher needs to work a little harder on his maths."

*gulp* Quite right, Nigel. I was doing it in my head ballpark-style and used the total population of the UK as one of my numbers for reasons unbeknownst to me. Sorry about that. So a two percent swing then. But I don't really think my point falls. Feel free to add further snide remarks. Scientists relatively weak at maths ended up as biologists, as well you know.