One of the first casualties of one-party rule, as in the 8th CD, is accountability and moderation. Notwithstanding the unscheduled departure of Jim Oberstar, the 8th CD is an artifact of decades of single party dominance.
When the same party dominates for decades (whether it’s Republicans in Idaho or Arrowhead DFLers), Special interests get a solid lock. The dominant party gets less responsive, campaigns less and drifts further toward their preferred ideology. This shows up statistically.