I really don't understand the insistence that the Democratic Praty is bleating
I live in firm Trump country. I ask people why they're voting for Trump if I know them well enough to talk politics. Try to change minds to the extent I can. Probably to about 50, 100 people total. There are a few patterns. The sense that there is a full court press against traditional values is definitely there. Whomever the Dems put forth will represent that, to their minds, by being the closest in alignment to the values on the offensive against their preferences.
Some core issues.
1. Immigration. A substantial % of Trump voters I believe want zero immigration. None. Hard no. If I were to guess the motivating factor, racism is not absent, but change aversion is probably greater. They feel like their community is fine as it is. I often get the sense that many wouldn't want ME to move in, and I'm a white guy born and raised one county over. None have said it explicitly, but I know it's there. They do actually accept those who actually arrive, quickly, generally, though.
On this issue, they are resentful. They believe the elite has ignored them(true of both parties, historically, less true of Trump, presently). I think they have a sense that liberals call any opposition to immigration at any number racist, imperious in ignoring what they think is a community's right to determine its members. The imperious bit is key in the anger. The marbled halls of academia are believed disprotionately influential, certainly moreso than barely paved country streets, on moral questions like these, and that is hated. A#1 resentment source, in my estimation.
2. On trans people in society, they feel like their older norms should prevail over new thought. This is often based in religion. Trans in girls sports is usually the chosen angle, but there's a certain glee you see people have when they know it's socially acceptable to be cruel or harmful, and I sense that there. They're there for the hate and don't really care about womens sports.
3. Different conception of fairness. They believe its unfair the state should help anyone, because no one helped them. Often that's true: no one did help them through genuinely dire struggles. Of particular ire is aid on basis of identity.
Those are the 3 I struggle to change minds on IRL. An online leftist probably actually has tried to shame them for these views at some point. Some will actually say so explicitly. The shaming is wholly ineffective at achieving its goal: they have refuges, both IRL and online, that they move to without any noteworthy impact on their life. It really just contributes to anger. From a pragmatic, actual changing of minds view, it is counterproductive. Extremely so. I doubt many would even consider Trump otherwise, honestly. That John Oliver segment on shaming was totally, wholly, disastrously wrong; it does not moderate behavior in these spaces, it actually increases radicalization afaict.