https://www.canberratimes.com.au/st...ake-historic-nrl-prelim-even-bigger/?cs=14280
"That's the 26,476 that attended their semi-final against the Wests Tigers back in 2010.
Canberra Stadium's overall attendance record is 28,753 - the ACT Brumbies' Super Rugby grand final win over the Canterbury Crusaders in 2004.
Given their attendances from the last time they were in the finals, the Raiders have already floated the idea of expanding the stadium's capacity.
In 2016, they increased the number of standing-room tickets, but this year they hope to go even further."
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Raiders have asked the NRL to install temporary seating, plus standing areas. It's up for the NRL to make the decision.