Back in 2016, there were many people who voted for Trump even though they thought he was unqualified/dishonest/untrustworthy/temperamentally unsuited etc. The main reason these people voted for Trump was because they were desperate for change, and they thought Trump would be the one to bring about such change. This year, such people probably still exist, albeit in much smaller numbers.
Well, Trump at least talked about protectionism and maybe some people put their hopes on that he would "bring back the jobs". Now the Dems are pro pro tariff, but the GOP Hawley types are here to stay too.