The argument is that everyone knows the next few years are going to be bleak, so it's better to hand over the clusterfuck to Labour sooner rather than later so the public associate the upcoming recession with them, rather than the Tories.
It has some merit, especially when you consider how well the Tories stuck the fault of the global economic crash of 2008 squarely at the feet of Gordon Brown (who'd, arguably, done more to ensure it wasn't as bad as it could've been than anyone else on on the planet).
I think it stuck better in 2008 as Brown had been chancellor for a decade before he was PM though - the issue is too visible while Tories are in power to say labour caused it this time
The argument is that everyone knows the next few years are going to be bleak, so it's better to hand over the clusterfuck to Labour sooner rather than later so the public associate the upcoming recession with them, rather than the Tories.
It has some merit, especially when you consider how well the Tories stuck the fault of the global economic crash of 2008 squarely at the feet of Gordon Brown (who'd, arguably, done more to ensure it wasn't as bad as it could've been than anyone else on on the planet).