If this is a re-alignment election; why?

[Bush did 311]

Incels

Millennial men have weaker education backgrounds than their female peers. In major cities they even earn less as well. A historically large percentage cannot get laid or form relationships. Every civilization is in trouble when it starts to have a large population of downwardly mobile sexually frustrated men.

Unlike most social issues where the left has been very proactive about offering solutions and reaching out to affected groups, this is one that a large percentage of the left, and liberals, and many people in democratic party consider "not a real issue", or "a good thing", or "not as serious as the issues women face so we're not gonna deal with it". I can see this coming a mile away. This is one issue where the people who should be reaching out and offering solutions have objectively failed to offer anything to help a group of people in distress and has instead met them with disdain.

These people don't support Republican economic or social policies necessarily. They like Trump specifically. They see Trump as a disruptive force that sends a message to the establishment. As long as he is on the ballot they will show up to vote for him. This does not reflect most of Trump's coalition. He still wins the traditional conservative and Republican groups as well. This is just the last 10% or so that put him over the top.

[Bush did 311]

I don't see much evidence that men are shifting GOP more than women this election. It's not as if Trump is making men's issues a prominent force in this election. Both men and women seem to be shifting to Trump.

Look at the numbers again then. The shift is coming from black and hispanic millennial men. Women in the same age group in the same demographics are holding steady.