E.J. Dionne: Sorry, but Thursday’s debate is about electability

Washington • It has become a habit to scold Democratic voters who say that electability is their standard in deciding whom to support for their party’s presidential nomination. Forecasts made hours before Election Day three years ago went spectacularly awry, so who can know what will happen in November 2020?Yet like it or not, the most important watchers of the Democratic debate on Thursday will be electability voters, who happen to constitute a majority of the party. And they are rig