Saunders is not going to win by running a 3rd party.  That is why Bernie hooked up to the Democrats and he is supporting and has made some progressive changes to the National Democratic Platform this election. Bernie knows he can't win in a 3rd party and I give him credit for moving on with his socialistic ideology and infusing more of it into the Democratic Party instead of trying to make change by creating his own party, dividing the liberal vote and putting Trump in office. Politics is sacrifice and the willingness to put your own interests aside and compromise to move forward even if it is too slow for some. The progressives made a lot of progress in the last 7 years. Recently stringent and unfair voting laws that affect poor and minority voters have been struck down in several states one such judge citing those laws as disenfranchising voters.