The audience YES/NO split at the Munk Debate was 67/33 before the debate and 63/37 after.

Resolve against the official Munk Debates results for the June 2023 debate on whether AI research and development poses an existential threat. True if the official pre-debate vote was 67% YES / 33% NO and the post-debate vote was 63% / 37%. Mostly true if each figure is within 1 percentage point. Mixed if one vote matches and the other is off by more than 1 point. Mostly false if both are off by 2 to 5 points but the direction of change (a shift toward NO) is right. False if the figures differ by more than that or the direction of change is wrong.

Set before the research began.

1. E1 Artificial Intelligence Debate Munk Debates · 22 June 2023

   “Swing: -3% (Con team win)”

2. E2 AI poses an existential threat, according to Munk Debates crowd, although a few were persuaded otherwise The Hub · 28 June 2023

   “At the start of the debate, 67 percent of the audience listed themselves on the pro side, while 33 percent were on the con side.”

3. E3 AI poses an existential threat, according to Munk Debates crowd, although a few were persuaded otherwise The Hub · 28 June 2023

   “the vast 64 percent majority of the audience remained on the pro side”

4. E4 Did Bengio and Tegmark lose a debate about AI x-risk against LeCun and Mitchell? — LessWrong LessWrong · 25 June 2023

   “Post-debate: 64% Pro, 36% Con”

A news report on the debate gives the pre-debate split as 67% pro and 33% con, which matches the claim exactly (E2). The same report gives the post-debate pro share as 64 percent (E3), and a forum post dated 2023-06-25 gives the post-debate result as 64% pro and 36% con (E4). That fits the official Munk Debates page, which records a swing of -3% and a con-team win (E1), since 67 minus 3 is 64. The claimed 63/37 post-debate figure is therefore 1 percentage point off, which the criteria rate as mostly true.