Ulster Unionist Party
http://uup.org/
Sinn Féin
http://sinnfein.org/
Sinn Féin is currently the largest republican (pro-united Ireland) political party in Northern Ireland. During the Troubles, secularist Sinn Féin was shunned by most po¬litical parties and governmental officials because of its links to the IRA. Under the leadership of Gerry Adams and Martin McGuinness, Sinn Féin played a leading role in the eventual disarmament of the IRA and the transi¬tion of hardline republicans from violence to political participation. Sinn Féin surpassed the more moderate nationalist party, the SDLP, in the 2005 British Parlia¬mentary elections, and in 2007 agreed to share power with the DUP in the Northern Ireland Assembly.