Jerry Pournelle has a very interesting, and frightening, insight:
The Democrats seem to be drifting toward the concept of prosecution of former office holders by criminalizing policy differences. That’s a certain formula for civil war; perhaps not immediate, but inevitable. The absolute minimum requirement for democratic government is that the loser be willing to lose the election: that losing an election is not the loss of everything that matters. As soon as that assurance is gone, playing by the rules makes no sense at all. (Pinochet learned that lesson. Fortunately for Chile, he was old and was allowed to die in peace; the inevitable — liberals can always find a good reason not to keep their word — persecutions after he turned over power on the assurance that he would be allowed to retire in peace were not so severe that his adherents didn’t take to their weapons.)
Via Instapundit, who adds an interesting email about the Roman civil war. I’m not so sure Caesar was a republican to the core, but the point doesn’t seem to rely on that.