What exactly are Democrats supposed to give Rural America to get them to vote for Democratic? Nobody benefited more from ACA/Obamacare than rural America (especially Medicaid expansion) and yet they still continue to trend to the Republicans.
The GOP's policies are poison to the needs of rural Americans, especially farmers
It's unfortunate, but feelings matter. Republicans have been successful in convincing rural Americans that Democrats don't care about them, but that they do. Democrats need to counter-attack in the feeling war by campaigning around the idea of a "party of the common man". And actually govern like they are if they want to survive one term.