The fucking article doesn't even try at all to answer its own question.

Palmer is a Baltimore resident who has worked for various businesses and nonprofits, often on issues involving technology and education.

This made me laugh...

Out of 91 ballots cast in the territory’s caucus, Palmer won 51 and Biden won 40, according to the local party.

Google tell me the population of American Samoa.

45,035 (2021)