The over 40 black population is overwhelmingly for Hillary, while the whites and younger dems (it seems all races) are pro Sanders. Looks like Hillary has little support in the party from other constituencies. Now that the southern primaries are behind her, she will have to sing a new tune..
I don't know what this means exactly. The pro Clinton crowd is aging and the majority will die off in 10 to 20 years.
Pro Sanders crowd will age and learn mommy, daddy, and the government can't pay the bills for them, or they may truly opt for a socialized government.
The pub side is more interesting. Trump has united a significant portion of the party that has grown frustrated with party lies for the past 35 years. Control illegal immigration, control trade, and fix the national debt.
Kasich is still my man. He said openly last night he was willing to work with the other side. He doesn't agree with the dems but understands you can't get 100% of what you want.