No way! Bernie Sanders will never win the 2020 election. The reason is because he is too outlandish is the things he stands for. For instance, he is set on breaking up big banks, raising the minimum wage, and many other things that sound great but are totally outlandish. His platform is nothing but a pipe dream. If big banks are broken up...everyone pays the price.
If minimum wage is raised, big business who are affected just charge more. If a burger joint is paying their people more, the burgers cost more. He is also for spending less on the military which is exactly what the nation's enemies want to hear. While Sander's ideas sound good, they are not within reality. There are too many practical people who will vote who realize this so he will ever win in 2020. The American people will see to it that he doesn't.