Original article by Roy Morgan
Market Research Update – Page: Online : 25-Jun-25

Roy Morgan’s latest data shows that 48% of Australians now support legalising marijuana, up 15 percentage points over the past decade (from 33% in 2015 and 42% in 2019). Opposition has fallen to 41%, also down 15 points since 2015 (from 56% and 49% in 2019), while 11% remain undecided. Men are more inclined to back legalisation of marijuana, with 51% saying it should be legal (40% opposed) compared to 45% of women (42% opposed). All Australians aged 18–49 now show majority support for legalisation; 18–24-year-olds have seen support grow from 36% in 2015 to 50% in 2019 and now 54% (an 18-point gain over the decade). Support among 25–34-year-olds has surged from 34% in 2015 to 46% in 2019 and now 58% (a 24-point increase). Middle-aged groups are also shifting: 35–49-year-olds now show a majority in favour at 51%. Meanwhile, support among 50-64-year-olds has risen 19 points to 48%, while opposition in this age group has fallen 18 points since 2019. Among those aged 65 and over, support has edged up slightly (from 33% in 2019 to 36% in 2025), yet this group continues to record the highest opposition at 54%.

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ROY MORGAN LIMITED

Original article by Roy Morgan
Market Research Update – Page: Online : 15-Oct-19

New research from Roy Morgan shows that 42% of Australians aged 14+ now support legalisation of marijuana, up 9% points in just four years. The percentage who say marijuana should remain illegal is down 7% over the same period, to 49%. A further 9% are undecided. Australians aged 18-34 are the most likely to support the legalisation of marijuana. This is also the segment of the population where opinion has shifted to the greatest degree over the last four years. In 2015 only 36% of 18 to 24 year-olds supported legalisation, now 50% do. The next age-group, 25 to 34 year-olds, has also seen a dramatic rise in support, from 34% in 2015 to 46% now. These are the two age groups in which support for legalisation is higher than opposition to the idea. Perhaps surprisingly, the two groups most opposed to the legalisation of marijuana are the youngest and oldest Australians. Only a little over a quarter of 14-17yr olds (26%) and a third of those aged 65+ (33%) support such a move. These are the latest findings from the Roy Morgan Single Source survey, derived from in-depth face-to-face interviews with over 50,000 Australians each year in their homes.

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ROY MORGAN LIMITED