Most of the offensive things Bevin said tend to piss off liberals, not as much conservatives. I looked through Bevin's history and this "local factor" doesn't appear to be near enough to account for a 31 point swing from Trump in 2016 to this.Yeah, no.
Bevin attacked the teachers, medicaid expansion, and the working class. Every one of those voting demographics had untold numbers of sympathetic voting friends and relatives.
While not universally hated he screwed himself with his 'eff you, it's none of their business' message.