The South has been trending more and more conservative for decades now. It’s pretty much a lost cause for Democrats there, with the exception of FL. I doubt Hillary could win a single one of the deep southern states, with the exception of Arkansas, and possibly FLA (which Obama I would say has a similar shot of winning). And Arkansas doesn’t – or shouldn’t – have near enough votes to matter.
However, while the South has been trending conservative, other areas have been trending more liberal (rocky mtn states like CO and NM, even AZ to a certain degree), New England and the West Coast are now pretty much Republican free zones at the state office or higher level (with the exception of RINO’s like Schwartzenegger who disagree with somewhere between 1/2 and 2/3rds of the Republican party platform). It offsets.