Objectively?
> Democratic Party platform is aligned with national polling on every one.
It depends on the pollster and where you're polling. I guarantee you rural Tennessee will not agree with downtown Washington DC on any of these issues. In contrast, rural California will likely agree with rural Tennessee. It's not as cut and dry as a homogeneous national poll of 2500 people. Every state, city, county are different. That's why there are federal, state, city, and county governments.
For instance, Abortions are legal nationally. States can individually decide how, or if, they wish to restrict it. This is as the constitution intends under the 10th amendment:
> powers not delegated to the federal government nor prohibited to the states are reserved to the states or the people.
This allows for democracy to take place at the local level, rather than having particular regions thousands of miles away from each other ultimately oppress the other.
To the point on LLMs, I think it's abundantly clear they will be used to propagandize and similar to social media will lock people in a bubble without alternative opinions. It'll be the worst of both worlds, the question is who's the puppet master. At some point soon, I imagine it'll be the AI.