[1] The governing Fianna Fáil party lost one MEP and a significant share of the vote, in line with the day's other election results.

Sinn Féin lost its only MEP in the Republic of Ireland, and the Socialist Party won a seat for the first time.

In Dublin, Gay Mitchell of Fine Gael and Proinsias De Rossa of Labour were re-elected, while Joe Higgins of the Socialist Party defeated the incumbent Fianna Fáil and Sinn Féin MEPs to take the third seat.

In South, Brian Crowley of Fianna Fáil was re-elected, Seán Kelly won a seat from his Fine Gael colleague Colm Burke, and Labour's Alan Kelly took the last seat in a tight contest between him, Sinn Féin's Toiréasa Ferris and the incumbent Independent Kathy Sinnott in the final count.

[2] In accordance with the terms of the Treaty of Nice, the number of MEPs from Ireland in the European Parliament was reduced from 13 to 12 for this election.