see, if it was up to me, i would have boycotted the debate because it's in an inappropriate venue. you couldn't drag me into a mosque, church or synagogue...
there should not be all-candidate debates in religious venues. at all.
as it is, there's not much that the candidate can really do. a lawsuit would be pointless.
https://lfpress.com/news/local-news/mosque-shuts-out-ppc-from-debate-over-partys-stance-on-religion-hate-crimes
the liberals are supposed to do better than this