Mandani did really well in NYC which is entirely consistent with the social media helping the left in urban cores but hurting elsewhere.

I think it is structural about the medium because it elevates the profile of relatively rare things like crime or ‘wokeness gone amok’ that dems are losing on. Similarly, with regards to ICE, it is helping dems by also raising the profile of rare incidents. But on net I think this sort of coverage hurts dems more than it helps.

Do you have evidence that it hurts elsewhere?

It isn't like the left was doing well in rural America before social media: people in the urban cores just didn't know what was going on there, and they didn't know what was going on the urban cores. But when I was growing up, people thought Bill Clinton was a communist in league with Castro.