Nope. Tactical voting doesn't really work for the Euro elections. Best to vote for who you want to win.
For TV to work, huge numbers would need to move to a specific party, while at the same time the mix for the other parties would need to be predictable. This isn't possible.
That said weird things can start to happen to seat share, if a party get >42%. SNP VI share is currently high 30s/low 40s. However, the relative VI mix for other parties is still crucial.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!