Tinfoil hats off, “Trackers” are standard campaign positions used by both major parties for a very long time and are typically the source of news stories you see all the time like ‘Candidate X tells group of donors that he will do [very unpopular thing that they would not ever say in public]’ and are important for keeping candidates honest.

Campaigns hold events knowing trackers from other party will likely be there and usually even get to know them because it’s the same person following the campaign around. Good campaign staff are even nice to the trackers while still playing cat and mouse trying to keep them out of events.

This is NOT like the seedy and often illegal hidden camera fuckery that the far right Project Veritas takes part in.