[wsj-responsive-pagerule id=”0″] The main event: Sen. Bernie Sanders, runner up in the 2016 Democratic presidential nomination contest Subplot: Sen. Elizabeth Warren, liberal icon. Scene-stealer? First Lady Michelle Obama [wsj-responsive-pagerule id=”0″] Eight years ago this summer, Hillary Clinton’s presidential campaign ended with a loss to Barack Obama, a humbling fall for a candidate once dubbed the […]