Are we close to a tipping point for a Constitutional Amendment to end the Electoral College?

[RgrF]

Cannot the National Popular Vote approach, if not adopted by a super majority of states, lead to distortions in Electoral vote distribution? If this is adopted by many blue states but not by most red and swing states, what would those distortions look like?

It would make my head hurt to try and research past elections for comparison, so hopefully someone has already done that grunt stuff.

edit: to cross a t