Notable psephologists such as John Curtice have highlighted that the Copeland swing was bigger than the suggested uniform national swing, which indicates that a larger than anticipated number of Labour seats could turn Conservative blue based on the current public mood. (theconversation.com)
The answer is to abandon Uniform National Swing and to use a non-Uniform Regional Swing model instead. (marriott-stats.com)
The truth is this was the messiest general election in modern British history - uniform national swing went out of the window, with similar nearby seats regularly heading in opposite directions. (politics.co.uk)