Medicare for All:  Bernie Sanders has intro­duced the plan in the Sen­ate, and it is sup­port­ed by Cory Book­er, Kirsten Gilli­brand, Kamala Har­ris and Eliz­a­beth War­ren, who have all spon­sored these bills, along with Rep. Tul­si Gab­bard in the House.  May­or Pete Buttigieg is also on record as being in favor of such a sys­tem.  The pro­posed plan would elim­i­nate pri­vate insur­ance and trans­form Medicare into a sin­gle-pay­er sys­tem run entire­ly by the fed­er­al gov­ern­ment.  Oppo­nents, even with­in the Demo­c­ra­t­ic Par­ty, are wary, how­ev­er, of ban­ning health insur­ers from sell­ing any­thing, as well as the total price tag.  The gen­er­al esti­mate is a whop­ping $32 trillion.

Medicare for Amer­i­ca:  Sup­port­ed by Beto O’Rourke and pos­si­bly Kirsten Gilli­brand.  This aims for uni­ver­sal cov­er­age while giv­ing work­ers the option of keep­ing their employ­er-spon­sored plan or switch­ing to a new and expand­ed ver­sion of Medicare.  The pro­pos­al rolls in any­one now on Medicare, Med­ic­aid, Oba­maCare-sub­si­dized plans and the Chil­drens’ Health Insur­ance Pro­gram.  Plans offered by employ­ers would have to match stan­dards set under the pro­posed new program.

Medicare X Choice Act:  Spon­sored by Sen­a­tors Michael Ben­net and Tim Kaine and in the House by Anto­ni­uo Del­ga­do, John Lar­son and Bri­an Hig­gins.  Among can­di­dates, the plan is also sup­port­ed by Beto O’Rourke, Amy Klobuchar, Pete Buttigieg, Kamala Har­ris and Cory Book­er. The pro­posed plan leaves in the exist­ing sys­tem and cre­ates a pub­lic option (this was pro­posed dur­ing the debate over the Afford­able Care Act and ulti­mate­ly reject­ed).  The pro­pos­al, if approved, would also expand tax cred­its for purchase.

Medicare at 50 Act:  Sup­port­ed by Cory Book­er, Kamala Har­ris, Amy Klobuchar and Kirsten Gilli­brand.  The pro­pos­al essen­tial­ly allows U.S. cit­i­zens between the ages of 50 and 64 to buy a Medicare plan, and can use Oba­macare sub­si­dies to do so.