Electoral (Amendment) Act 2009

The Electoral (Amendment) Act 2009 (No. 4/2009) was a law in Ireland which provided for parliamentary constituencies for the 31st Dáil Éireann. The 31st Dáil was elected at the 2011 general election in March 2011.
This Act replaced the Electoral (Amendment) Act 2005, which defined the constituencies used for the 30th Dáil (elected in 2007). The 2007 report of the Constituency Commission, an independent body established by the Government of Ireland to review constituency boundaries, proposed several changes to Dáil constituencies. These changes were provided for by the Act.
Summary of changes.
This table below, summarises the changes in representation. It does not address revisions to the boundaries of constituencies.
There were further boundary changes to 18 constituencies, these were:
Cork East, Cork North-Central, Cork North-West, Donegal North-East, Donegal South-West, Dublin North, Dublin North-Central, Dublin North-East, Dublin South, Kerry South, Kildare North, Kildare South, Laois–Offaly, Meath East, Meath West, Roscommon–South Leitrim, Sligo–North Leitrim and Tipperary North.
List of constituencies for the 31st Dáil.
"Explanation of columns