I would say the majority of the voters against it are parents and religious groups.
Off course added to the people that Wall pointed out.
As for me it's easy enough to grow my own for my own personal use. I couldn't care less if it's never legalized.
Lol I'm not really concerned about my personal use since I don't even smoke. Legalization just seems (to me) like the most economically beneficial option. Not only for us, but possibly for Mexico.