First, the polls suggest that more people who voted Conservative in 2019 have now switched to Reform than to Labour. But Reform were only on the ballot paper in one in six council wards. So, it may well be the case that people who would vote Reform if there had been a Reform candidate locally stuck with the Tories instead. Certainly, Conservative support fell more heavily where Reform did stand. In the BBC's sample of key wards the party's support fell by 19 points in these wards - compared with 11 points in wards where Reform did not stand. Labour, in contrast, did rather better where Reform stood. That 19-point drop matches the 19-point fall in the average level of Conservative support in the polls since May 2021. That figure may represent a better guide to the Conservatives' immediate prospects in a general election.
Second, the local election results confirm the message from last year's contests that the geography of party support has changed to the Conservatives' disadvantage.
The party's support fell more heavily in wards it was trying to defend. At the same time, some voters seemingly voted for whichever party was best placed to defeat the Conservatives locally. Labour's support increased most (at the expense of the Liberal Democrats) in wards where they started off second to the Conservatives, while the Liberal Democrats advanced most (and Labour did less well) in wards where were the principal challengers locally. Indeed, it is these two patterns that help explain why the Conservative Party lost nearly one in two of the council seats it was trying to defend. Conservative MPs would be unwise to assume that the same fate could not also befall them.