The selection by Fine Gael of Senator John McGahon in Louth has also dogged the Taoiseach’s campaign. Mr McGahon was found not guilty of assaulting a man outside a Dundalk nightclub in a criminal case two years ago, but a civil action earlier this year found him liable and he was ordered to pay damages.

The two main parties in the outgoing Irish government have again ruled out Sinn Fein as a potential coalition partner in the next government. The leaders of Fianna Fáil, Fine Gael and Sinn Féin were taking part in a TV debate just days before the general election.

How do you go from jumping down each other’s throats to jumping back into bed together in the space of days? And how do you expect voters to trust you?

The two main coalition parties have now published their election manifestos, outlining what they are promising the electorate if they are elected to government.

Fianna Fáil’s refusal to contemplate Sinn Féin as a coalition partner is policy-based and not personal, Micheal Martin has insisted. Mr Martin again made clear he would not engage with Sinn Féin in relation to government formation post-election.