I don't think this conversation is just about the US; an earlier comment in the chain said "for those in democratic socialist countries, stop voting for sociali

I don't think this conversation is just about the US; an earlier comment in the chain said "for those in democratic socialist countries, stop voting for socialism". But if the parent commenter was talking about America, 'leftist' presumably means Democrat. Medicare, Medicaid, and Obamacare were all introduced by Democrats and signed into law by Democratic presidents. Until quite recently it was Republican policy to repeal Obamacare, and in 2017 a partial repeal (including big cuts to Medicaid) would have gone through if not for a small number who voted against the party line.