(in Northern Ireland) the Social Democratic and Labour Party(a political party of the left that is supported mainly by Catholics)社会民主工党(北爱尔兰主要由天主教徒支持的左翼政党) CultureThe SDLP was formed in 1970 by a group of MPs in favour of equal rights for Roman Catholics. The party would like Northern Ireland and the Republic of Ireland to be united as one country, but did not approve of the violent methods of the IRA. Its MPs in the House of Commons vote the same way as the Labour Party on most issues.