It's unclear exactly when the primaries stopped being a joyous occasion for the Democrats. But as the weeks have ground on, the intensity between Democrats who disagree has calcified, the vitriol grown fiercer. According to exit polling in the Texas primary, 91 percent of Clinton supporters said they would be dissatisfied with Obama as the nominee; 87 percent of Obama fans said they would be dissatisfied with Clinton. Nationally, a quarter of those who back Clinton say they'd vote for John McCain if Obama won the nomination (while just 10 percent of Obama supporters would do the same if he lost).
Encouraging for McCain, but also early. Many of these folks wear their hearts on their sleves, and after the nomination is worked out, they may change their minds. On the other hand, (to use our Maximum Leader's analogy), maybe they'll down spiral into civil war.