Comment Alaska was first, actually (Score 5, Interesting) 588
No, actually, possession and manufacture (growing) of marijuana has been legal in Alaska since 1975. I've grown myself, and even had the attention of the authorities called to the matter, which worked out favorably. I've also had friends have growing equipment confiscated by the police, and subsequently returned with an apology. Nota bene: the legal protections applied (almost) exclusively in one's house or primary residence.
There are some cultural differences at work here; Alaskan marijuana was (semi-)legalized under a privacy clause, which mostly stems (ironically) from a far-right desire to be left the hell alone by everyone but especially the Government. Except in the form of pork barrel projects, which everyone knows are necessary in order to compensate for the state's underdeveloped "frontier" status.
Generally speaking, while it was legalized in the sense that cops were not going to bother one for private use, public consumption was strongly discouraged. This was not the first time full legalization has been on the ballot in Alaska, there were similar ballot measures in 2000 and 2004. It's a complicated situation; Alaska is almost ludicrously conservative compared to the other states which have legalized.
One must give credit where credit is due, I think it's significant that after years of effort and a long history of consumption in Alaska, this measure did not succeed until after Colorado and Washington. However, ultimately, I think that the most influential state in marijuana politics would be California: their medical marijuana dispensary system has paved the way for the de-demonization of cannabis. Now, the onus is on all of us to reverse the damage that the War on Drugs has caused, particularly in America's having pushed its drug laws on the entire rest of the world through the UN.
A side note on that: I suspect that this last part will involve the US pushing its drug laws on the rest of the world once more, but it would be nice if there were some process by which the international community could come to sane decisions about these drugs.