When I was isolated in conciliardom, I would have guessed that maybe there were 1,000 - 5,000 traditionalists in the world (made up mainly of folks lost in conciliardom as I didn't know about more fully traditional groups back then). Now I suppose 1M sounds about right. I would guess there are 10,000 - 25,000 sedevacantists (maybe double to triple that number counting those who think the situation is quite possibly SV though not sure in their minds).