You are a Republican Kasich voter (7%) who voted for Hillary. You think as per your lens, a small section electability will be determined.
Unfortunately people like you are completely cut off from the Dem primary base. Because if there were more like you, then Hillary would be President. She got 7% of you guys & lost 9% of Dems against Trump. That number would be MUCH bigger in Rust Belt states where she also got very low turnout among her base.
The exit poll says it was 8% each way: 8% of Dems voting Trump and 8% of Republicans voting Clinton:
http://www.cnn.com/election/results/exit-polls