Does anyone know if there's an age group breakdown for ND for 2016 or any previous years anywhere?
I looked for exit polls for the Dakotas in recent elections. There are none. Though IIRC, Prop 6 in South Dakota flopped amongst the younger voters and was neck and neck with older ones. This was in 2006.
This old Gravis poll from February that had Heitkamp leading by 2% had an age breakdown:
Then again...it is Gravis
Well Cramer is only leading by 2% among olds there, and he is leading by 3% among olds here. So it's basically the same result. If we extrapolate that number, then this poll has Heitkamp leading by 1%.
However, she is the incumbent and if she is polling below 45 that's a huge problem for her, as undecideds tend to break towards the challenger.
Interesting that the earlier Gravis poll had Cramer winning Asians with 58%.