Ok,assume this is not a huge outlier.
How the hell does it fit with all the state polls from the last 2 weeks?
It doesn't, so unless there's something wrong with their methodology (and from their track record, there probably isn't) then this one
is likely an outlier. Even well-designed polls are going to be outside the MoE 5% of the time, by definition. That's 1 outlier out of every 20 polls. How many polls have we had in the past few days?
The C+15 poll is likely a similar outlier, but on the other end of the range.