I don't buy Black voter realignment one bit. Polling cross tabs are showing a ridiculous realignment to Trump. The actual direct polling of Black voters hasn't shown that at all.
I somewhat buy Latino voter realignment. Albeit the Trump Puerto Rico insults might mute that in some states. Actual direct polling of Latino voters has shown some erosion from 2020, albeit Harris has improved over time.
With the way Latino voters behave, it wouldn't be unusual for us to see realignment in say Florida and Texas, but not necessarily nationally. Latino voters are a diverse voting bloc.
I don't buy young voter realignment one bit. The actual direct polling of young voters has generally shown no significant realignment. Albeit the gender gap has grown.
I am skeptical of non-college realignment. Maybe regional.
I am skeptical of older white realignment.
I think the gender gap will be significant. Robust polling of women show they take abortion rights seriously. And threats to democracy. I think it is quite possible Harris finally wins white women.