As with all marijuana polling there is a big generational divide. It has majority support among voters under 46 but it is still opposed by a significant number of senior citizens. Clearly the demographics should help to steadily increase support in the future.
Going forward it will be interesting to see if New Mexico sharing a border with Colorado will have any impact, positive or negative, on their support for legalization over the next few years. Neighboring Colorado should make it easier for voters in New Mexico to travel there and directly see how what legalization is like. It could also make trying to enforcement marijuana prohibition seem more futile. By comparison it is much more difficult for voters from the East Coast to travel to one of the two green states.
Seeing if there could be a proximity effect on state level support for legalization I think would be a very interesting topic for political scientists to study once there is more data.
Jon Walker is the author of After Legalization: Understanding the future of marijuana policy
Photo by David Hererra under creative commons license