When will the next POTUS candidate win the Presidency without winning a single ex-Confederate state?

[Vosem]

Seems very unlikely with Virginia adopting a very different political course from the rest of the ex-Confederacy, and Georgia seeming reasonably likely to do so soon. (While Florida and Texas still vote Republican, they also have very different demographic breakdowns from the rest of these states). I think we're far enough away from the Civil War that ex-Confederacy just isn't a very useful descriptor anymore, though it is interesting that 2000/2004 came pretty close to this outcome (and 1976 wasn't that far off, either; had either of the Eisenhower/Stevenson elections been close -- like 1952 polling actually showed -- they would've fit this pattern).

There were three presidential winners before the Civil War who carried no states which would become Confederate ones -- 1796, 1824, and 1860 -- and seven after the Civil War -- 1880, 1888, 1896, 1900, 1904, 1908, and 1924. But we haven't actually had an election like this in nearly a century.