Much has been written about how Donald Trump's ability to attract working-class white voters could put Michigan, Ohio and other Midwestern swing states in play for Republicans.

But Larry Sabato, the University of Virginia political scientist, argues this morning that the Trump effect could mark Georgia and three other red states as possible pickups for presumptive Democratic nominee Hillary Clinton by turning off suburban women and moderates.

And he writes that, for the moment, the GOP is an “underdog” in the race for 270 electoral votes, giving Democrats the edge in Colorado, Iowa, Nevada, North Carolina and Ohio.

Polls may be ephemeral and sometimes wildly inaccurate, yet surveys (and demographics) are the only hard data we have this far out from the election. The polling averages for a Clinton-Trump face-off show roughly a 10 percentage point lead for the Democrat.  RealClearPolitics  has Clinton up about 11 points  and  HuffPost Pollster  gives Clinton a lead of about nine points . This kind of Democratic advantage, if properly distributed, would produce an Electoral College result similar to, or greater than, Barack Obama's 2008 total of 365 electoral votes to John McCain's 173 (Obama won the national popular vote by 7.3 points). Again, this suggests that one or more states currently rated Likely Republican (Arizona, Georgia, Indiana, and Missouri) might slip into the Democratic column.

The counter to that, of course, is Trump's show of force in Georgia. He swept all but four of Georgia's counties and won nearly every demographic, from the very wealthy to the poor, from independents to conservatives, and from evangelicals to the secular. The depth and breadth of his support among Republicans in Georgia will make it hard for Democrats to build their case.

More: Trump's Georgia win illustrates how he's capitalized on a political shift