There are two separate issues
*Formal attendance and visits from both official delegates and big names to Republican and Democrat conventions
- plus big name funded speaking visits by Mp's or former MP's
and
*small numbers volunteers in their own time/money helping in election itself not speaking/policy engagements.
currently also being discussed here
www.gransnet.com/forums/news_and_politics/1341588-Should-we-really-be-doing-this
respite from England football team this coming early Monday morning?


I'm not so sure.