Suggest using following for formatting: format = d => d3.format(",")(d)

Thanks!

See this discussion on why Alaska is not showing accurately: https://github.com/tonmcg/US_County_Level_Election_Results_08-20

Example choropleth with Alaska working properly: https://observablehq.com/@mariodelgadosr/election-2020-county-vote-distribution-within-a-state

Thank you!

Consider direct source for data: https://static01.nyt.com/elections-assets/2020/data/api/2020-11-03/national-map-page/national/president.json