Gerry Adams has hit out at "nasty little soundbites" from the leader of Fianna Fáil.
The Sinn Féin leader says the conduct of Micheal Martin during the election would "make the DUP blush".
The comments came as Deputy Adams addressed his party's Ard Fheis in Dublin last night.
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Events are taking place around the country today to mark the 100th anniversary of the actual date of the 1916 Rising.
In Dublin, there will be a commemoration ceremony at Arbour Hill, while - a celebration of music and dance - will take place at Croke Park.
The Reclaim the Vision of 1916 group is also hosting a parade - starting at 2pm at Merrion Square - which will make its way to the GPO, where a free open-air concert will take place from 3pm.
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North Korea says it is prepared to stop its nuclear weapons testing - if South Korea suspends war games with the US.
The South holds annual military exercises with America.
However, Pyongyang's foreign minister has said suspending those could reduce tensions on the peninsula.
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Tonight is Census Night, when every person in the country is asked to fill out their census form.
The information is used for planning things like what schools to build and who should control them.
Anyone who fails to take part in the census could face prosecution.
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Hillary Clinton says she wants the UK to remain a member of the European Union.
Her intervention came a day after President Barack Obama bluntly told Britain it should remain in the EU to preserve its remaining global clout.
Mrs Clinton, who spent four years as US secretary of state during Mr Obama's first term, has made her foreign policy credentials a central piece of her campaign for president in the November 2016 race for the White House.