I honestly can't be bothered to read through all of this to get a handle on the actual point of contention, but the tl/dr is that Canberra has a long history with both codes and they're so close in popularity that it's basically impossible to say which is more popular at any one time. We can guesstimate, but accurate data simply isn't available publicly to make that judgement.70/30 is ridiculous. I'm biased, but my guess would be 55/45 in favour on NRL.
Of all the workplaces I've been in Canberra, I'd say it's actually been close to 70/30 in favour of AFL. And the majority of NRL fans have had an AFL team they follow, too. But I recognise that isn't necessarily reflective of the whole city.
I see a pretty even split of merch when I'm out and about.
But it won't be easy to judge until we both have our own teams.
Badger17 would probably be the best to give a more neutral estimate on the split.
Which is more popular has swapped back and forth throughout time and will likely continue to do so; Aussie Rules was more popular in 70s and a good chunk of the 80s, Rugby League more popular in the other chunk of the 80s and 90s, etc.
It's also much harder to accurately measure Aussie Rules support without there being a local team. With RL you can use the Raiders as a rough measure, but obviously no equivalent exists for Aussie Rules.
If we set aside the other codes for sake of simplicity, then generally it's a very even split, probably somewhere between a 40/60 and 45/55 split. At this very moment though RL is observably more popular with the Raiders being on a high and the bandwagon in full swing, but a disappointing season or two would be enough to tip that advantage on it's head.
I'm repeating myself but it's true, if an AFL club lunched in Canberra today it'd be a similar size to the Raiders from day one, maybe even a little bigger with good management and a bit of luck.





