Minnesota has precinct maps on their website:
http://www.sos.state.mn.us/index.aspx?page=1734 (though unfortunately in a format with % Yes, rather than Yes vs. No)
Here's a map of Snohomish County comparing the Yes vote on gay marriage against the vote for Obama. The red areas are where Obama outperformed R-74 whereas blue areas gay marriage did better than Obama.
Unsurprisingly, Obama outperformed gay marriage along highway 99, an area with plenty of minorities (for Washington) and working class poor; in the poorer parts of north Everett; in downtown Marysville (which resembles areas near highway 99); and on the Tulalip Indian Reservation. Gay marriage outperformed Obama along the wealthier coastal precincts (similarly in Mill Creek), along highway 9 in Cathcart (?), some areas around Monroe and various lakes, and (for some reason) in the Stillaguamish Valley. My own precinct was one of the few that voted for Romney yet still supported gay marriage (and marijuana legalization).
Maps like these are great. Keep up the good work.
