I have just read the Laura Kuensberg quote - I really don't think Election staff would let any Candidate or their staff look at the face of a Ballot Paper, it just wouldn't happen. The only way a Candidate could possibly determine how the voting had gone, is to be present at each day's opening, (sorry, but I don't know whether they are even allowed to do this) and try to see where each cross has been placed, by looking at the back of the Ballot paper (if someone has really pressed down with the pencil, then there may be an indent on the paper). Not an easy thing to do, I am sure you will agree. It leaves me to think, that maybe it is just wishful thinking, or a large dose of fake news!