THE SOUTH....For many years, the Democratic Party controlled the agenda of American politics and Southerners controlled much of the Democratic Party. So the South had enormous political influence.
Later, most Southerners switched to the Republican Party, but by then it was Republicans who controlled the agenda of American politics. So the South still had enormous political influence.
As of January 20th, however, the Democratic Party will control the American political agenda once again. But Southerners are still Republicans, which means that their political influence will be nearly nonexistent.
In other words, for the first time since Reconstruction, the South will be almost completely shut out of national power. There are still a few liberal Southerners who belong to the Democratic Party, of course, but the reactionary, traditionalist South is, for the time being, nearly powerless. They will not control anything, their caucus is a discredited rump, and their influence will be negligible. There is no reason to fear them or to care what they think. Their power to filibuster, itself guttering and only barely alive following the 2008 election, will be all they have left.
This is the first time this will be true in well over a century. So say it again: The South will have essentially no influence over the course of American politics for the next eight years. We live in momentous times.