Many see Bernie Sanders and Elizabeth Warren as two peas in the liberal Democratic pod but they are actually quite different. Bernie Sanders is a revolutionary who wants to change what he calls the rigged American system. He comes from a European political tradition, socialism, and seeks to turn the economic order upside down.
Elizabeth Warren, on the other hand, is a regulator. If the system is rigged, she has the plans to regulate it, not revolutionize it. She made her political splash creating of a new consumer regulatory bureau and she teaches the laws of bankruptcy. She is in the American progressive tradition of trust-busting and regulating business.
There is nothing subtle about Bernie. How will he pay for Medicare for All? By taxing the rich, he openly says. She says, I have a plan for it.
In the end, the regulator may be more effective at getting elected and more dangerous than the revolutionary.