If I worked for Mastodon, I would create a turn key solution for parties that want to set up a Mastodon server for all their party candidates.

Ilhan Omar is still on X.
Bernie Sanders is still on X.
AOC is still on X.

Make it easy for them to switch. Then make sure they are aware of this option.

Update: The first part already exists on
https://joinmastodon.org/hosting
as pointed out by @osma. Thank you Osma.

Managed Mastodon

@randahl yesterday at FOSDEM there was a member of the European Parliament who was asked why so many politicians are still on X and her answer made total sense (sadly):

Politicians stay on X because journalists are still there, so they feel that if they leave they will become irrelevant / not be written about.

And journalists stay on X because politicians are there.

It’s a vicious cycle

@_elena @randahl This is why I think we need to adopt the "snowball" approach. We need to keep pressuring politicians and journalists on why they are still on X. And we need to be prepared to being ignored a lot of the time. But occasionally we will succeed. In the Netherlands, for example, @volkskrant no longer posts on X and are working to #LoseTheXLink (still there but defunct). Every small success adds up, until we might one day reach a tipping point. Keep pushing.