Based on the experience of executions by block voting, I prefer not to vote against a blocked player for now, until Ormhild is provided with two clear pieces of evidence (if we believe that only the murderer killed in the first night, and also only he killed in the second night, and also with an ultimate ability).
I like the evidence against Navirus; I might vote against him. But I'm still unsure.
By the way, where does the conviction come from that the mafia killed this night, and not the murderer?