The major religion of Ireland is Christianity, accounting for 94 percent of the population. Of those, 84 percent identify with the Roman Catholic Church. Within the island nation of Ireland, however, there is a deep divide between the majority of the population, which identifies itself as Catholic, and the minority who identify as Protestant. Ireland is divided politically between the Republic of Ireland and Northern Ireland, which historically has been closely tied to Great Britain, and which, until very recently, had a Protestant majority. In other words, Catholicism is the main denomination on the island, but within the politically-demarcated territory of Northern Ireland, the majority of the population was Protestant. The most recent census data for 2010 for Northern Ireland, however, shows that, for the first time, Protestants are no longer the majority in that enclave.