Big question with a lot of nuance and different angles you could approach from. What I think will clarify some things: the emotional side of liberal vs conservatives is that one side sees how humanity could be better and strives for that change, while the other worries that we'll get worse and resist the change.

Well for quite some time, things have been rapidly changing like no other time in history due in large part to advancements in technology. Both sides can see that we've ended up in some dark places as a result and generally the world is more confusing, divided, and stressful than ever.

In reality there is a lot of great progress that we've made in recent times. But people who are slow to adapt don't see it that way, which makes them extremely uncomfortable and left feeling like it totally justifies their philosophy. But nobody is listening because the popular media shuts them out.

So basically they're throwing a huge temper tantrum and trying to kick over the sand castle everyone else has worked so hard to build, because they feel fed up, self-righteous, and ignored. They don't see it that way, of course, they feel they're renegades tearing down a godless society and saving the world. They vote for a buffoon because they're tired of that idea being weaponized against them, so they're owning it. With him they're able to take center stage and be so loud and in your face that you can't ignore them.