https://www.pewresearch.org/fact-tank/2019/11/14/americans-s...
https://news.gallup.com/poll/323582/support-legal-marijuana-...
That's not to say people who oppose the legislation's vote doesn't matter, but it's overturned by the majority that favor it.
By the numbers in the links you provided, those supporting legalization for medical use only (which I do) represent a significant portion (> 1/3) of those lumped into the broader "support legalization" category. At the same time, many people interpret that broader category as supporting legalization of recreational use, which nationwide, has just 59% support.
Also important to note that public support is much lower in some states, and as a federal republic, those individual states have (and should continue to have) the power to decide for the citizens who live there.
Additionally, that number will almost certainly be higher in coming years. The shift we have seen in recent decades seems very robust.
I would argue this is due to the American public realizing that many of the arguments in favor of prohibition were exaggerated or downright false.
Demanding brownies and joints for "medical use" is just straight up dishonest. You'll notice that drugs for legitimate medical use are not supplied in either way. (oh, it's time to eat a glaucoma prevention brownie...)
100% agree.