The ideological fight for the soul and future direction of the Democratic Party is about to boil over. A commission created in the aftermath of Democrats’ 2016 presidential primary is meeting in December for the last time to make reform recommendations. This meeting is going to be a doozy.

Debate over how to reform the Democratic National Committee and the presidential primary process pits Hillary Clinton loyalists against the Sen. Bernie Sanders, I-Vt., wing. How the DNC handles their contending views about how the party should be run promises to be a painful moment of truth.