Any evidence yet of whether Alba is convincing many people to sign up to their "hack the additional member system" plan of SNP-in-constituency-plus-Alba-in-regional?
Ballot Box Scotland are projecting they'll pick up 5 seats, following the most recent poll which put them on 6%:
http://ballotbox.scot/. They're also suggesting George Galloway's batshit Alliance For Unity will pick up a seat in the South of Scotland (presumably George himself).
List vote projections though are a very thorny issue with a ton of margin for error and massive regional variations, and which way the seats fall is heavily dependent on what happens in the constituencies (since the list acts as a corrective measure). In the Highlands for instance, you have not only the SNP's best chance of a list seat (because the LibDems will almost certainly win both the Northern Isles constituency seats), but also the Greens vying for a second seat, the Alba factor, and Andy Wightman standing as an independent.