You have to think Bernie has some internal polls that say he will lose KY. Otherwise why was he campaigning in Puerto Rico yesterday instead of staying in KY?
PR vote is June 5.
No polling that I can find, but Benchmark Politics has Hillary winning.
Kentucky Democratic County Benchmark Guide - Clinton 52% - Sanders 48% https://t.co/Potf6xGiQv
— Benchmark Politics (@benchmarkpol) May 15, 2016