You may have heard that there's a new Britain-wide YouGov poll out showing a significant drop in Jeremy Corbyn's personal popularity. For my money, though, the bigger revelation from the poll is that it suddenly looks like the Liberal Democrats have made a catastrophic mistake by electing Vince Cable as their new leader. (In fairness they didn't have much choice, given that nobody else wanted the job, for a variety of implausible and pompous reasons.) Cable's net rating is a dismal -27, which is exactly the same as Theresa May's. Presumably that can be explained by his involvement in the Tory-led coalition between 2010 and 2015, but it's quite surprising that the passage of time hasn't succeeded in rehabilitating him.
Speaking for myself, I find it difficult to dislike Cable, and he's obviously a serious figure. I reckoned it was probably in the Lib Dems' own best interests that Jo Swinson had allowed him to take the job (regardless of what her real reasons for doing so were), but it looks like I was wrong about that. Swinson was in it up to her neck during the coalition period, but the public probably aren't as aware of her role as they are of Cable's. She would have started with more of a clean slate, however undeservedly.
The Liberal Democrats' collective rating has slipped from -20 in the immediate aftermath of the general election to -33 now, and the obvious suspicion is that this has been caused by Tim Farron being replaced by Cable. It's hard to see what else has changed for the worse in the intervening period.