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Surely DEFCON has more limited attendance than any number more mainstream conferences.

Search results are saying that defcon sees some 30k people. The 2023 Chicago Auto Show had 300k. Major city with all the amenities.

https://www.chicagoautoshow.com/the-2023-chicago-auto-show-c...



Does the Chicago Auto Show host 300k people on a single day?


The Mccormick center is also hosting the DNC. (Alongside the United Center)

It's very capable to handle large conferences and does throughout the year.


Nah, it’s about 30,000 per day for a week a half.




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