Below is a chart of the fraction of Democrats (including Independents who caucus with Democrats) that sponsor or cosponsor "Medicare for All" (M4A) bills, including Senator Bernie Sanders' earlier versions under the title "American Health Security Act." All of these would prohibit private health insurance (Ted Kennedy's "Medicare for All" bills are not included). This shows that M4A has enjoyed significant support for a number of years. What is recent is for people to recognize what the bills actually say.
[email protected] (Casey B. Mulligan) considers the following as important: Medicare for All
This could be interesting, too:
[email protected] (Casey B. Mulligan) writes Critiques of Single-payer: Why Did They Take So Long to be Discovered?
Jeffrey Frankel writes Bold Ideas are Not Always Better than Old Ideas