Medicare for All is a caucus in Congress, a mantra among 2020 presidential candidates, and a platform in a lot of gubernatorial races.
New York gubernatorial candidate Cynthia Nixon is the latest Democrat to fully endorse Medicare for All — meaning, she’s interested in turning today’s insurance patchwork into a single government-run health care system, or a single-payer system. Gubernatorial candidates from a dozen states are running on the policy, contrasting cong...