Big shifts within small groups and small shifts within big groups helped propel Donald Trump's return to the White House .
The Republican candidate won by holding onto his traditional coalition - white voters, voters without a college degree and older voters - while making crucial gains among younger voters and Black and Hispanic men, according to AP VoteCast, a far-reaching survey of more than 120,000 voters nationwide.
His Democratic opponent, Vice President Kamala Harris , made small gains - most significantly with white men with a college degree living in urban areas - but it was not enough to offset her losses elsewhere.
Trump increased his share of the youth vote
Younger voters made up a bigger chunk of Trump's coalition, compared with his voters four years ago.
