Allegedly, the biggest concern this time around was the economy. Millions of people complaining about inflation and the cost of goods voted for a guy promising to raise tariffs, and a party that historically caters to big business. The same big business that has moved a lot of jobs overseas, and has lobbied to relax restrictions on visas to hire more foreign workers for onshore jobs.
To me, this looks a lot like people voting against their own interests. I think that when people vote against their own interests, it's usually because they don't understand what they're voting for, i.e. it's an education issue. And it's not surprising that other people would be perplexed and frustrated by this.
But maybe I've just been misled by the wrong propaganda. I guess we'll find out.