Sounds reasonable, but still, 10’s of thousands? They are probably extrapolating from a small percentage like polls do.
I think the first time you go on the web to request tickets you are asked to provide your party affiliation. Voluntary as I recall, it’s been a long time since my first ticket request.
I would expect these percentages to be fairly accurate.
Come to think of it, if you’ve never requested tickets to a rally go online next time and just make a request.
They’re free and then we can find out if my memory is still worth a hoot!