Why are Democrats so undisciplined and Republicans so regimented?

The asymmetry explained

Friends,

Chuck Schumer couldn’t hold his senators together at a time when their unity and toughness were essential. Yet Trump cracks the whip and gets all Republicans to do his bidding.

Does this mean Schumer should go? Yes.

But the problem runs deeper — to a fundamental asymmetry at the heart of American politics: Democrats are undisciplined. Republica…