After the Tullymander debacle, it was decided that governments should no longer enjoy the ability to alter constituency boundaries. As a consequence of this, the Taoiseach Jack Lynch established an independent boundary commission (later the Constituency Commission) to handle this task in the future. This commission introduced its first changes in 1980, and they were first used in the 1981 general election. They would be used in every election from then until the next redrawing of the constituencies in 1992. At 11 years, this was the longest period of time in which the same constituencies were used in Ireland since the 1948-1961 constituencies. Each revision since 1992 has lasted for only five years or less.
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The Dingle peninsula went entirely to Kerry South, while the Tullow section of Carlow returned to Carlow-Kilkenny. Both of these changes would be reversed slightly in a minor revision to the boundaries in 1983, wherein Tullow returned to Wicklow and the Knockglass region of Kerry returned to Kerry North.
The most radical changes came once again to Dublin. Its county boundaries were restored, but within them came a departure from the previous tradition of distinguishing between city/borough and county areas, as in Cork. Dublin would now be divided between a Central area, and North, South and West areas, with North and South receiving their own east, central and west areas. The only old Dublin constituency to remain was a slightly enlarged Dún Laoghaire.
Only Laois-Offaly, Ireland's oldest continuing constituency, remained untouched. It would stay this way until the 2012 Constituency Commission report.
The changes made to these constituencies since 1992 have been largely minor, compared to the complete redrawings which had taken place prior to this reivision. Until 2012, the constituencies in Dublin retained the same pattern, and many constituencies in other counties still do. The days of governments altering boundaries had finished. From now on, boundaries would only be changed if demographically necessary, not if politically desirable.
The 1981-92 boundaries superimposed in red over the previous boundaries.
1990 Boundary Revision
In 1990, a new Electoral Amendment Act provided further alterations, albeit on a much smaller scale than ever before seen. The only boundary changes to be made were the replacement of the Roscommon (3 seats) and Longford-Westmeath (4 seats) constituencies by Longford-Roscommon (4) and Westmeath (3) respectively.
This revision was in place for the 1992 general election, and was abolished by the next Electoral Amendment Act in 1995.