I'd argue that a decline from ~28/29% of voters identifying as Republican to ~25/26% is not trivial, especially given that 28/29% is not too high to begin with. I'd also guess that those ex-Republicans have pretty lukewarm feelings on Trump.

I'd argue that a decline from ~28/29% of voters identifying as Republican to ~25/26% is not trivial, especially given that 28/29% is not too high to begin with. I'd also guess that those ex-Republicans have pretty lukewarm feelings on Trump. https://t.co/im2MSAvD4H

— Nate Silver (@NateSilver538) July 23, 2018