The Toronto Star and Campaign Research polled 1,001 Ontarians, 76% of whom said they "somewhat" or "strongly" opposed Skelly's defiance of public health orders.
Almost two-thirds of respondents (64%) said they "strongly oppose" the restaurant owner's decision in the poll, which was conducted between December 1 and December 3.
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Percentage of surveyed Ontarians who don't support Adam Skelly
The largest demographic in support of Skelly was men aged 18-34. 24% of those respondents were in favour of his decision to re-open.
Only 5% of people said they were unsure whether they supported the decision or not.
Almost 90% of Ontarians had heard of Adam Skelly and Adamson Barbecue, which made headlines in November after Skelly re-opened his restaurant for indoor dining despite provincial COVID-19 regulations.
Skelly was eventually arrested and charged by Toronto Police.
The poll also showed that Ontarians are mostly content with the current lockdown restrictions.
More than 75% of respondents agreed with the government's decision to implement lockdowns in Toronto and Peel Region.
But 34% of respondents wanted to see even harsher stay-at-home requirements and closed schools.
Only 20% of people who answered the survey disagreed with the current restrictions.