Revised
With the hisp vote trending more and more Dem and the increased immigration (assuming trump hasn't been elected) states like AZ,TX, become tossups but still may break republican by slim margin. MO is a state that Hillary would have won in 08 and its becoming more of a tossup . I could see states like IA and WI trending more red as unions become more and more marginalized .
As for GA I live here so i have 1st hand knowledge. The Atlanta suburbs are trending more libreal with the right candidate and ground game the Dems could win this state much of the same way that Obama won NC in 08. By 2020 this is a toss -up state although they dem would have to run up huge margins in the metro.
