On returning to Northern Ireland in 1996, Gildernew was the second-placed but unsuccessful candidate for Sinn Féin in the Northern Ireland Forum elections for Fermanagh and South Tyrone. The following year, she was appointed Sinn Féin representative to London and was part of the first Sinn Féin delegation to visit Downing Street. In the 1998 Assembly elections, she was elected MLA for Fermanagh and South Tyrone, retaining the seat in the 2003 and 2007 elections. Gildernew has campaigned on women's and mothers' rights.
Election to Westminster
In the 2001 UK general election, Gildernew was elected to Parliament as Member for Fermanagh and South Tyrone, defeating the Ulster Unionist candidate James Cooper by 53 votes. Like all Sinn Féin MPs, she followed a policy of abstentionism and never took her seat in Westminster in the five times she was elected at the polls. In the 2005 election, she was re-elected and increased her majority to 4,582 votes. In the 2010 election, the Democratic Unionists, Ulster Conservatives and Unionists and Traditional Unionist Voice all chose not to field candidates and she held her seat by 4 votes against independent UnionistRodney Connor. In October 2014, Sinn Féin announced that Gildernew would be the party's candidate in the 2015 Westminster election. She lost the seat by 530 votes to Ulster Unionist Party candidate Tom Elliott. According to the Times Guide to the House of Commons, Gildernew was popular across the sectarian divide in one of Northern Ireland's most polarised constituencies. She won her seat back in 2017, beating Elliott by 875 votes. Elliott closed the gap to a mere 57 votes in 2019, making Fermanagh and South Tyrone the most marginal seat in the country.
During her time as Minister for Agriculture and Rural Development, Gildernew dealt with problems such as an outbreak of bluetongue disease. She also increased cross-border co-operation with the Republic of Ireland on farming issues.
In a July 2012 interview for The Impartial Reporter, Gildernew defended embattled businessman Seán Quinn, saying that "e has been treated disgracefully by the Irish Government. Had they not tried to strip him of all his assets, including his home, deny him the ability to function in business, and routinely try to humiliate him I believe he would have paid back every penny he owed to the Irish taxpayer". Quinn, the former head of the privately owned QUINN group, was declared bankrupt in January 2012. Sinn Féin distanced themselves from Gildernew's comments made with Mary Lou McDonald that the Quinns had engaged in illegal business practices.
Personal life
Gildernew is married to Jimmy Taggart and is the mother oftwo boys, Emmet and Eunan, and one girl, Aoise.