By the way, of the many false claims coming from our pro-Confederate brethren, let me add one to the list:
In fact, both John Adams -- Federalist father (1796) & Democrat-Republican son (1824) -- were elected without carrying a single southern state.
Neither election caused the South to secede.
After the Civil War, several Republican presidents were elected without winning a southern state: Garfield, Harrison, McKinley, Teddy Roosevelt, Taft and Coolidge.
So, does anyone remember the last president elected without carrying a southern state?
No, sadly, not Barack Obama.
It was Herbert Hoover, in 1932.
Every president, Republican or Democrat, since Hoover has carried at least a few southern states.
Until 1964 Democrats always swept the South.
Since Reagan in 1980, Republicans have always won the majority of southern states.
Republican Hoover was elected in 1928 without carrying a southern state.
In 1932 Hoover was defeated by Franklin Roosevelt, when depression era northerners joined permanently depressed southerners in voting for liberal/progressive Democrats.