Starting in the 1970s, there has been a shift away from traditional Catholic affiliation to Protestant, Evangelical and other Christian denominations. Presbyterians and Pentecostals attracted a large number of converts, with percentages of Protestants in the state rising from five percent in 1970 to twenty-one percent in 2000. This shift has had a political component as well, with those making the switch tending to identify across ethnic boundaries, especially across indigenous ethnic boundaries and being against the traditional power structure. The National Presbyterian Church in Mexico is particularly strong in Chiapas, the state can be described as one of the strongholds of the denomination.