The only people advocating communism are the Communist Party of America. All the "left" in America is advocating is a slightly more progressive new deal like Norway or indeed most of Europe. They are FDR New Dealers. Or Eisenhower Republicans!

Single-payer is not radical: It will help us compete with the rest of the developed world. Free higher education for those capable is pretty common all over the world. Again, it could help us compete with the rest of the countries that do that.