I didn’t have to at the Saints game. Had driving licence and ticket in hand - steward gave them the once over (verified matching names presumably) and allowed me to proceed.
I guess, given the assumption that groups 2, 3 and 4 are each approximately three times the size of group 1 then, on average, you'd expect to be group 2.8 (yes, yes I know) as in 10 average ballots you'd get...
1, 2, 2, 2, 3, 3, 3, 4, 4, 4 = 28 / 10 = 2.8.
Those who have got group 1 once are...