The socialists need to secure the vote of nearly all non-right-wing parties to be able to form a coalition, including support from all nationalist parties.
PSOE (122) + Sumar (31) + ERC (7) + Junts (7) + Bildu (6) + PNV (5) = 176 votes needed to appoint Sanchez as PM
This is going to be interesting how negotiations develop in the following months. If they donβt succeed, we will go to repeat elections.