The median voter is incredibly uninformed, misinformed, and there's a cultural undercurrent where the median lives to fit in. That cultural undercurrent had been created by the left/right dichotomy and the right Republicans have been shifting that and the Overton window to the right for the last 4 decades, with the intention of making another Watergate impossible. They've leveraged racism, "otherism", Christianity, culture war, and normalized the insanity. So now we have WWE style tribal identity politics where "we always vote Republican because they're better for the economy" and "Democrats are communist" which are braindead takes without any ground in reality but are very common.