Bernie Sanders' front-runner status in the Democratic presidential primary promises to activate a vigorous debate about his Medicare for All plan, particularly as some Democrats fret his push to eliminate private health insurance could be politically treacherous for the party.
When Sanders introduced the latest version of his government-run coverage system this week, he once again earned the support of four senators who are his rivals for the nomination. But even as they've signed on, they've expressed varying degrees of fealty to one of the core goals of his vision: dumping the existing private market for a single-payer structure.
