Sinn Fein vice-president Michelle O’Neill filled out her ballot paper in St Patrick’s primary school in her home village of Clonoe, Co Tyrone, accompanied by party colleague Linda Dillon.
Thirty miles away, DUP leader Sir Jeffrey Donaldson cast his vote at Dromore Central primary school in Co Down.
Unionist rival Doug Beattie, leader of the Ulster Unionist Party, voted at Seagoe primary school in Portadown, Co Armagh.
Naomi Long, leader of the cross-community Alliance Party, cast her ballot accompanied by husband Michael at St Colmcille’s parochial house in the east Belfast constituency where she was once the MP.
Colum Eastwood, leader of the nationalist SDLP, voted at the Model primary school in his home city of Londonderry accompanied by his wife Rachael and his children.
Jim Allister, leader of the TUV, voted early in the morning at Kells and Connor primary school in Co Antrim.
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Alliance Party leader Naomi Long and her husband Michael casting their votes in East Belfast this morning
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Alliance Party leader Naomi Long and her husband Michael casting their votes in East Belfast
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TUV leader Jim Allister with his wife Ruth arriving at Kells and Connor Primary School, Ballymena
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TUV leader Jim Allister give a thumbs up as he arrives at Kells and Connor Primary School, Ballymena