So I think I have a few questions from this. Is it legal for a tech firm to do this? It is just a poll after all, but couldn't this count as some form of tamper

So I think I have a few questions from this. Is it legal for a tech firm to do this? It is just a poll after all, but couldn't this count as some form of tampering with electronic devices? If this just happened, how many times before has this company done it? They said it was unsuccessful, does that mean they failed to do it or failed to do it enough to sway the polls? It just is a very weird incident and I don't know how I feel about it all.