OK, let's address this. Or at least: try to. Under Jeremy Corbyn, Labour fought 7 elections - and in practice, won NONE of them.

2016 local: LAB 31 CON 30 - pathetic

2017 local: CON 38 LAB 27 - catastrophic

2017 general: CON 42 LAB 40

2018 local: CON 35 LAB 35 - rubbish https://twitter.com/jeffrey_bowers/status/1360255679882231821

2019 local: CON 28 LAB 28: complete embarrassment for both major parties

2019 EU: LAB 14 (finishing 3rd), CON 9 (finishing 5th): unheard of, unprecedented

2019 GE: CON 44 LAB 32

There's two outliers here. Which are they, do you suppose?

It'd take an extremely strange political scientist or analyst to treat either the 2019 EU election or 2017 GE as the rule. In practice, both were freaks, amid two Parliaments of utterly rubbish results.

What should an opposition party be doing at mid-term elections?

The answer is: winning all of them by double digits or close to it, and securing huge swings at by-elections too. Instead, there were people on here hailing Corbyn when Labour so much as held a by-election seat!

Ed Miliband, of course, ended up doing embarrassingly badly in 2015. These were his local election results:

2011 +2
2012 +7
2013 +4
2014 +2

The writing was on the wall for Labour throughout that time - despite considerably better results than Corbyn ever achieved.