What Can Democrats Do With a Narrow Majority?

In which I take a question from a reader, and reach out to historians Julian Zelizer and John A. Lawrence to help answer it

This is the fifth of six posts open to everyone on the new paid subscription model: thanks to those of you who have signed up in the past ten days! If you wish to subscribe or upgrade to a three times a week paid subscription, click here. If you are already a subscriber and prefer one post a week, do nothing! If you want to read the post and then decide…