code: def site_content(self, election_day):
          
          from electionnight.models import PageType
  
          page_type = PageType.objects.get(
              model_type=ContentType.objects.get(
                  app_label="election", model="electionday"
              ),
              election_day=election_day,
          )
          site_content = self.get(
              content_type=ContentType.objects.get_for_model(page_type),
              object_id=page_type.pk,
              election_day=election_day,
          )
          return {"site": self.serialize_content_blocks(site_content)}
docs: Site content represents content for the entire site on a
          given election day.