Definition of "bloc"

bloc

/blɑk/

noun
plural blocs
1. A group of voters or politicians who share common goals.
  Quotations
  But a huge bloc of non-Hispanic white residents without bachelor’s degrees — 72 percent of the population age 25 or older — has turned the 7th District into Republican turf.
  2020, Geoffrey Skelley, Nathaniel Rakich, “Two Special Elections On Tuesday Could Hint At Another Blue Wave In 2020”, in FiveThirtyEight
2. A group of countries acting together for political or economic goals, an alliance: e.g., the eastern bloc, the western bloc, a trading bloc, the Eurozone, the European Union.