Actually I didn't. Anyone who can't remember the source of the title, it's explained here. As for yesterday's Labour by-election victory, it is unwise to base much on a single result, but anyone is bound to wonder, at least momentarily, if Jeremy Corbyn has a point.:
Jeremy Corbyn has said Labour’s decisive byelection victory in Oldham is proof that his party is a broad church with deep-rooted support across the country.
Certainly Labour support is very deep-rooted, we already know that. Whether an oddball political poseur such as Jeremy can mobilise and benefit from it remains to be seen, but I doubt it. We also have this reaction from politicalbetting.
The default assumption when parties talk about “internal polling” should be that they are lying
A cynic might add that it's the default position when parties say anything at all about any subject under the sun but that's another issue. The main issue is whether or not Jeremy is rather more popular with voters than he is with the media or his MPs.
Too early to tell but probably not in spite of the Oldham result. For example, recent polling does not suggest that he is seen as economically competent. Perhaps Oldham had a good candidate in Jim McMahon who comes across as personable and capable, in which case the result may not be so good for Jeremy after all. Personable and capable are not really what he wants on the benches behind his back.