Demographics, party ID, regional breakdown and methodology look sound. Also, this sample voted for Obama 52-46.6 - matching the 2012 results.
Well, they reweighted the data to get the sample's reported 2012 votes to match the actual 2012 results: "Data was weighted by 2012 election results and Michigan results included regional weights."
This practice is somewhat dubious (as pointed out in the LA Times tracking poll thread) since it's impossible to verify whether the respondents really did vote the way they said they did.
