Interesting that the margin among young people is so small. Sanders beat Clinton by about 70 points in the under 30 group in IA; here, it's just 28 points. I'm not entirely sure why it'd be so much lower in his effective home state than in a place like IA (obviously it has nothing to do with racial diversity), but we might be in for a surprise performance when compared to his margin in the poll.
Also, I'm guessing that based on the 28-point margin being so (relatively) close to the 15-point margin at-large, Sanders is winning all age groups with relative ease.
I found the cross-tabs which show Sanders against Clinton:
61-33 (+28) among ages 18-29
55-39 (+16) among ages 30-44
56-38 (+18) among ages 45-59
45-46 (-1) among ages 60+
It's weird how Sanders' lead is actually higher with the 2nd oldest group than with the 2nd youngest group.
