Half my timeline is tweeting that Trump can't change the election day and half my timeline is tweeting that he might well do it anyway, and I'm reminded of Neils Bohr's observation that the opposite of a profound truth is often another profound truth.

It matters that election day is established by federal law, and that the there's no chance of the House agreeing to change it, and that states run elections. It matters that Trump has no legal path to moving it, and that as a practical matter it would be nearly impossible.

But it also matters that it's in Trump's interest to delegitimize the election, and to undermine it, and that democracies are fragile, and that our democracy is far more fragile than most, and more fragile than its been in a very long time.

Trump isn't going to move election day. But Trump's threat to move election day further weakens our already fragile system, and there are a hundred ways that this could end very very badly.