My take, revised to 6PM EST 10/10/14 :
Ignore shades, as I derive this map from another partly of my creation:
white -- SSM already legal.
green -- inevitable through majority support at the next opportunity
blue -- SSM likely in accordance with an impending ruling of the US Supreme Court but popular anyway
orange -- SSM likely in accordance with an impending ruling of the US Supreme Court even if unpopular.
yellow -- borderline case, could easily drift favorable.
I really don't get why you don't include data from states where SSM is legal; it'd be interesting to see how opinion in UT and OK evolves
Poll
