The issue is that most people in despair are inclined to vote for a massive change. They just want anything different than the current status quo.
At the moment in the USA, only the right is offering substantial, systematic change. As awful as it sounds to centrists and the left (I.e. the majority of the population), they don't offer any substantial alternative.
We're basically at a point where the current status quo/political center WILL be replaced by something else. Centrists need to realise that the only alternative to right wing change is left wing change...
Those people don't want "left wing change" because it helps the people that they hate as well as helping them. They'd rather shit their pants so we have to smell it.
I agree, they don't currently. The problem is that most also don't want right wing change, they just haven't realised that one or the other is inevitable.
They'll probably realise too late, but many would prefer left wing change to right wing change. The problem is, that there just isn't any substantial left wing options being offered, so they'll go with the right wing option by default.