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A Sinn Fein party election worker dressed up as a crocodile stands behind a banner referring to Brexit outside a polling station in Belfast on March 2, 2017 as voters in Northern Ireland go to the polls to elect a new Assembly. Northern Ireland began voting Thursday in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / Paul FAITH (Photo credit should read PAUL FAITH/AFP/Getty Images)

A Sinn Fein party election worker dressed up as a crocodile stands behind a banner referring to Brexit outside a polling station in Belfast on March 2, 2017 as voters in Northern Ireland go to the polls to elect a new Assembly. 
Northern Ireland began voting Thursday in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / Paul FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)

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A view of Stormont Parliament of Northern Ireland on the day when the Northern Ireland Secretary James Brokenshire announced a snap Stormont Assembly election for March 2. On Monday, 16 January 2017, in Belfast, Northern Ireland, United Kingdom. (Photo by Artur Widak/NurPhoto via Getty Images)

A view of Stormont Parliament of Northern Ireland on the day when the Northern Ireland Secretary James Brokenshire announced a snap Stormont Assembly election for March 2.
On Monday, 16 January 2017, in Belfast, Northern Ireland, United Kingdom. (Photo by Artur Widak/NurPhoto via Getty Images)

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Sinn Fein party election election workers fix one of their posters outside a polling station in Castlederg, County Tyrone, Northern Ireland, on March 2, 2017 as voters go to the polls to elect a new Assembly. Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / PAUL MCERLANE (Photo credit should read PAUL MCERLANE/AFP/Getty Images)

Sinn Fein party election election workers fix one of their posters outside a polling station in Castlederg, County Tyrone, Northern Ireland, on  March 2, 2017 as voters go to the polls to elect a new Assembly. 
Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / PAUL MCERLANE        (Photo credit should read PAUL MCERLANE/AFP/Getty Images)

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A woman passes a Sinn Fein party election poster outside a polling station in Cookstown, County Tyrone, Northern Ireland, on March 2, 2017 as voters go to the polls to elect a new Assembly. Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / PAUL MCERLANE (Photo credit should read PAUL MCERLANE/AFP/Getty Images)

A woman passes a Sinn Fein party election poster outside a polling station in Cookstown, County Tyrone, Northern Ireland, on  March 2, 2017 as voters go to the polls to elect a new Assembly. 
Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / PAUL MCERLANE        (Photo credit should read PAUL MCERLANE/AFP/Getty Images)

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A Loyalist paramilitary mural is seen with a DUP election poster in east Belfast, Northern Ireland, on March 2, 2017 as voters go to the polls to elect a new Assembly. Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / Paul FAITH (Photo credit should read PAUL FAITH/AFP/Getty Images)

A Loyalist paramilitary mural is seen with a DUP election poster in east Belfast, Northern Ireland, on  March 2, 2017 as voters go to the polls to elect a new Assembly. 
Northern Ireland began voting in snap elections to resolve a political crisis fuelled by bad blood and Brexit, which is testing the delicate peace in the British province. Long-simmering tensions boiled over in January when the Sinn Fein party -- once the political arm of the Irish Republican Army -- brought down the province's semi-autonomous government. / AFP PHOTO / Paul FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)