Eh… It depends per person and it depends on the claim. For me, if it is a role that “won’t be missed if gone”, then I wouldn’t change my vote.
Pretty sure a witch trial would start as soon as carbonated claims. Y’know, the classic “what info do we know about the role; what has she done at N1; how much do we believe her claim; does her claim match her past behavior; (if we let her live) what do we want her to do tonight”.