The fact that it came so close shows that a bigger push (and more money, especially) could've made the difference. That's the lesson to take from this, and if the DCCC comes back tomorrow and says "well, the populist message failed here, let's keep focusing on suburban districts" then they'll continue to lose golden opportunities like this one.
Except the parts of the district where Thompson seems to have done relatively well in are precisely the urban/suburban parts of the district, not the rural parts.
Rural = ultra-safe Trump/GOP territory.