As we know all too well, a few votes one way or another can make or unmake a president-elect. Ask Al Gore and Hillary Clinton. Recently the Democratic Socialists of America gathered in Atlanta for their biannual convention. Among its feistier members: Congresswoman Alexandria Ocasio-Cortez. Besides the usual “Bernie or Bust” optics, progressive fealty and targeting of the loathsome Donald Trump, there was this sobering resolution. “Bernie or Bust” is meant literally. The DSA will not officially endorse anyone other than Sen. Bernie Sanders as the party’s nominee in the general election. Deja vu all over again?