That's not quite right. It isn't that voters on the left are quick to abandon. They are fastest at disagreeing. Which, if not checked, will lead towards a desire to abandon.
The one great weakness of the left is our inability to agree to disagree. We all want our right to be the right and will shoot ourselves in the foot to prove it.
Post - Welcome: Irony.
If we all swallowed our disdain and moved forward together, we'd easily outstrip any efforts from the Right to win anything.
Maybe. Though I say we just come together, get his ass in, and then in the first year also get his ass out and let the VP or Speaker step in. Like it or not, changing now IS risky and it is arguable whether it's the better choice. I'll go with what the majority chooses because fighting against Trump and the GOP is what's important.
Let me repeat: We are in the game where we must do what the Republicans do and come together against a common enemy. So I recommend everyone agree on a candidate then shut up and checkmark that box. We can go back to verbally juxtaposing our positions through digital larping, or whatever it is we do when most of us forget politics exist for four years.