One surprising aspect of "political polarization" is the ways it's correlated with men vs women.
From this NYT article about a post-debate poll:
In the pre-debate poll, Mr. Trump had led among likely male voters by 12 percentage points. After the debate, his lead among men ballooned to 23 points. That movement was particularly concentrated among younger men and men without college degrees.
Mr. Biden’s five-point edge among likely women voters before the debate actually ticked up slightly, to eight points.
Lol, eh?