The GAA is organised on an all-Ireland basis with all 32 counties competing; traditionally, counties first compete within their province, in the provincial championships, and the winners then compete in the All-Ireland senior hurling or football championships.
Ireland's largest religious denomination is Roman Catholicism (about 70% for the entire island, and over 90% for the Republic), and most of the rest of the population adhere to one of the various Protestant denominations.