They're not entrenched in Red Team vs. Blue Team. So when they vote, it's usually based on whatever is going on at the moment, what's happening with their wallets, what particular brew of policies or perceptions are reigning in their world.
Social media is a terrible place to get a sense of them, because social media are at the heart of the partisan bunker.
I know plenty of non-partisan people - and I'm pretty close to being one myself. Many of them are plenty informed. Just not political junkies (which I'd argue does not mean informed, particularly when that "information" is coming from highly biased sources interested in narrative over facts and context).
There are a lot - a lot - of people who are not very fond of our party who still pull the lever for us. Hell, I'm downright sick and tired of the gerontocratic hierarchy and the inability of a consultant class to just read the fucking rest of the country for once, but here I am voting blue over and over.
And we've not touched on a growing Left of young people who are increasingly disenchanted with the out of touch political class who they mentally file with the billionaires given how much the system benefits them (and their families, cousins, friends, hangers on, etc. No no, they're just really amazing at the stock market, you guys).
They're winnable votes. But our electoral strategy hasn't been geared to winning them. And partisans don't want our strategy to be geared toward that. They want their already-in-the-bag-no-matter-what votes to be the sole arbiter of policy and messaging.
It's working great!