We have just witnessed the first exchange in what is going to be more than likely the most miserable campaign for the U.S. presidency that many of us can remember.

Maybe in all of American history.

Joseph R. Biden Jr. and Kamala Harris spoke to us back to back about the abject failures of the Donald Trump-Mike Pence administration.

My initial takeaway, though, has to do with a personal aspect of the relationship between the members of the Democratic Party presidential team.

It is that Joe Biden does not carry a grudge. It was Harris, you’ll remember, who drew a bit of Biden’s blood during a Democratic presidential joint appearance when she hit him hard over his Senate opposition to federally mandated busing of school children.

The fact that Biden would select Harris to run with him tells me in stark terms: That’s OK; you took your best shot and I survived. Now, join me in this fight to the finish.

I am looking forward to watching this campaign unfold, even though the misery we can expect will be deep and will be intensely personal. That’s how Trump rolls.