A Musical Analogy That Can Be Applied to Democratic Primary Politics, Perhaps.

[The Velveteen Ocelot]

1. A4 has been all over the place for centuries.

Mozart's A4 was 421-425 Hz. (This would explain why some of his music, notably his Coronation Mass when pitched to the modern A440, is so painful for sopranos, and maybe it means the Queen of the Night's aria in The Magic Flute shouldn't be quite as fiendishly difficult). In Germany during the late Renaissance it was often much higher, to the point where lutenists were breaking strings - but the very bright sound that resulted was popular at the time. Recently some bel canto-style opera singers wanted A4 set to 432, which was what Verdi used, and which takes into consideration the passagio (change in register) of the singers' voices.

This, of course, is a digression from your point, which is that some parts of the Democratic party are out of tune with the rest of it. In the current context I would suggest that the problem is that a few of the oboists suck at making reeds and aren't interested in fixing their problem. They'll just keep playing and enjoying the dissonance.