# Dún Laoghaire (Dáil constituency)

Dún Laoghaire is a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas. The constituency elects four deputies (Teachtaí Dála, commonly known as TDs) on the system of proportional representation by means of the single transferable vote (PR-STV). It is in the eastern part of the county of Dún Laoghaire–Rathdown.

## History and boundaries

The constituency was created in 1977, succeeding the earlier Dún Laoghaire and Rathdown constituency which had been created in 1948. The constituency is in the eastern coastal area of Dún Laoghaire–Rathdown county (part of Dublin County Council till 1994), including the town of Dún Laoghaire and the villages of Ballybrack, Blackrock, Booterstown, Cabinteely (east of the N11 road), Dalkey, Deansgrange, Glasthule, Killiney, Loughlinstown, Monkstown, Sallynoggin, Shankill, and Stillorgan.
The Constituency Review Report 2023 of the Electoral Commission recommended that at the next general election, Dún Laoghaire be altered with the transfer of territory to Dublin Rathdown.
For the 2024 general election, the Electoral (Amendment) Act 2023 defines the constituency as:
       Ballybrack, Blackrock-Booterstown, Blackrock-Carysfort, Blackrock-Central, Blackrock-Glenomena, Blackrock-Monkstown, Blackrock-Newpark, Blackrock-Seapoint, Blackrock-Stradbrook, Blackrock-Templehill, Blackrock-Williamstown, Cabinteely-Granitefield, Cabinteely-Kilbogget, Cabinteely-Loughlinstown, Cabinteely-Pottery, Dalkey-Avondale, Dalkey-Bullock, Dalkey-Coliemore, Dalkey Hill, Dalkey Upper, Dún Laoghaire-East Central, Dún Laoghaire-Glasthule, Dún Laoghaire-Glenageary, Dún Laoghaire-Monkstown Farm, Dún Laoghaire-Mount Town, Dún Laoghaire-Sallynoggin East, Dún Laoghaire-Sallynoggin South, Dún Laoghaire-Sallynoggin West, Dún Laoghaire-Salthill, Dún Laoghaire-Sandycove, Dún Laoghaire-West Central, Foxrock-Beechpark, Foxrock-Deansgrange, Killiney North, Killiney South, Shankill-Rathmichael, Shankill-Rathsallagh, Shankill-Shanganagh, Stillorgan-Priory."

## TDs

Teachtaí Dála (TDs) for Dún Laoghaire 1977– :
| Key to parties  AAA–PBP = AAA–PBP  DL = Democratic Left  FF = Fianna Fáil  FG = Fine Gael  GP = Green  Lab = Labour  PBP = People Before Profit  PBP–S = PBP–Solidarity  PDs = Progressive Democrats  S–PBP = Solidarity–PBP  WP = Workers' Party ||||||||||||
| Dáil | Election | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) |
| 21st | 1977 | | David Andrews (FF) | | Liam Cosgrave (FG) | | Barry Desmond (Lab) | | Martin O'Donoghue (FF) | 4 seats 1977–1981 | 4 seats 1977–1981 |
| 22nd | 1981 | | David Andrews (FF) | | Liam T. Cosgrave (FG) | | Barry Desmond (Lab) | | Martin O'Donoghue (FF) | | Seán Barrett (FG) |
| 23rd | 1982 (Feb) | | David Andrews (FF) | | Liam T. Cosgrave (FG) | | Barry Desmond (Lab) | | Martin O'Donoghue (FF) | | Seán Barrett (FG) |
| 24th | 1982 (Nov) | | David Andrews (FF) | | Liam T. Cosgrave (FG) | | Barry Desmond (Lab) | | Monica Barnes (FG) | | Seán Barrett (FG) |
| 25th | 1987 | | David Andrews (FF) | | Geraldine Kennedy (PDs) | | Barry Desmond (Lab) | | Monica Barnes (FG) | | Seán Barrett (FG) |
| 26th | 1989 | | David Andrews (FF) | | Brian Hillery (FF) | | Eamon Gilmore (WP) | | Monica Barnes (FG) | | Seán Barrett (FG) |
| 27th | 1992 | | David Andrews (FF) | | Niamh Bhreathnach (Lab) | | Eamon Gilmore (DL) | | Helen Keogh (PDs) | | Seán Barrett (FG) |
| 28th | 1997 | | David Andrews (FF) | | Mary Hanafin (FF) | | Eamon Gilmore (Lab) | | Monica Barnes (FG) | | Seán Barrett (FG) |
| 29th | 2002 | | Barry Andrews (FF) | | Mary Hanafin (FF) | | Eamon Gilmore (Lab) | | Fiona O'Malley (PDs) | | Ciarán Cuffe (GP) |
| 30th | 2007 | | Barry Andrews (FF) | | Mary Hanafin (FF) | | Eamon Gilmore (Lab) | | Seán Barrett (FG) | | Ciarán Cuffe (GP) |
| 31st | 2011 | | Mary Mitchell O'Connor (FG) | | Richard Boyd Barrett (PBP) | | Eamon Gilmore (Lab) | | Seán Barrett (FG) | 4 seats from 2011 | 4 seats from 2011 |
| 32nd | 2016 | | Mary Mitchell O'Connor (FG) | | Richard Boyd Barrett (AAA–PBP) | | Maria Bailey (FG) | | Seán Barrett (FG) | 4 seats from 2011 | 4 seats from 2011 |
| 33rd | 2020 | | Jennifer Carroll MacNeill (FG) | | Richard Boyd Barrett (S–PBP) | | Cormac Devlin (FF) | | Ossian Smyth (GP) | 4 seats from 2011 | 4 seats from 2011 |
| 34th | 2024 | | Jennifer Carroll MacNeill (FG) | | Richard Boyd Barrett (PBP–S) | | Cormac Devlin (FF) | | Barry Ward (FG) | 4 seats from 2011 | 4 seats from 2011 |
Note: The columns in this table are used only for presentational purposes, and no significance should be attached to the order of columns. For details of the order in which seats were won at each election, see the detailed results of that election.
* ↑ Served as Ceann Comhairle in the 31st Dáil from 2011 to 2016 and was returned automatically at the 2016 general election.

## Elections

^ *: Outgoing TD

### 2024 general election

2024 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fine Gael | Jennifer Carroll MacNeill | 21.0 | 11,685 | | | | | | |
| | Fianna Fáil | Cormac Devlin | 15.9 | 8,831 | 8,947 | 8,993 | 9,820 | 10,161 | 11,066 | 11,381 |
| | Fine Gael | Barry Ward | 15.0 | 8,337 | 8,696 | 8,743 | 9,000 | 9,476 | 10,805 | 10,992 |
| | PBP–Solidarity | Richard Boyd Barrett | 12.2 | 6,795 | 6,809 | 6,915 | 7,242 | 7,717 | 8,512 | 12,130 |
| | Sinn Féin | Shane O'Brien | 9.0 | 4,995 | 4,997 | 5,082 | 5,453 | 5,568 | 5,668 | |
| | Green | Ossian Smyth | 7.7 | 4,297 | 4,320 | 4,348 | 4,434 | 5,320 | | |
| | Social Democrats | Hugo Mills | 7.5 | 4,192 | 4,204 | 4,269 | 4,488 | 5,486 | 7,489 | 8,512 |
| | Labour | Martha Fanning | 5.7 | 3,169 | 3,188 | 3,220 | 3,367 | | | |
| | Aontú | Mairéad Tóibín | 4.2 | 2,376 | 2,380 | 2,828 | | | | |
| | The Irish People | Cathy Lynch | 1.2 | 649 | 650 | | | | | |
| | Independent | Michael O'Doherty | 0.6 | 343 | 344 | | | | | |
| Electorate: 95,462 Valid: 55,669 Spoilt: 247 Quota: 11,134 Turnout: 55,916 (58.6%) |||||||||||
* ↑ Boyd Barrett is a member of People Before Profit.

### 2020 general election

2020 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| | Solidarity–PBP | Richard Boyd Barrett | 15.5 | 9,632 | 9,746 | 10,119 | 10,628 | 10,902 | 11,119 | 16,364 | |
| | Green | Ossian Smyth | 14.9 | 9,300 | 9,391 | 10,170 | 11,532 | 11,900 | 12,510 | | |
| | Fine Gael | Jennifer Carroll MacNeill | 12.4 | 7,754 | 7,787 | 7,891 | 8,337 | 8,656 | 11,488 | 11,666 | 12,061 |
| | Fine Gael | Mary Mitchell O'Connor | 11.8 | 7,330 | 7,355 | 7,440 | 7,685 | 8,067 | 10,136 | 10,281 | 10,612 |
| | Sinn Féin | Shane O'Brien | 9.6 | 6,002 | 6,054 | 6,226 | 6,349 | 6,401 | 6,432 | | |
| | Fine Gael | Barry Ward | 9.2 | 5,744 | 5,796 | 5,892 | 6,140 | 6,349 | | | |
| | Fianna Fáil | Cormac Devlin | 9.2 | 5,715 | 5,815 | 6,331 | 6,530 | 9,527 | 9,994 | 10,301 | 11,071 |
| | Fianna Fáil | Mary Hanafin | 6.7 | 4,196 | 4,262 | 4,603 | 4,752 | | | | |
| | Labour | Juliet O'Connell | 4.8 | 3,009 | 3,048 | 3,372 | | | | | |
| | Social Democrats | Dave Quinn | 2.2 | 1,382 | 1,419 | | | | | | |
| | Aontú | Mairéad Tóibín | 1.9 | 1,185 | 1,539 | | | | | | |
| | Independent | John Waters | 1.5 | 925 | | | | | | | |
| | Irish Freedom | Con Óg Ó Laoghaire | 0.2 | 119 | | | | | | | |
| Electorate: 99,811 Valid: 62,293 Spoilt: 357 (0.6%) Quota: 12,459 Turnout: 62,250 (62.8%) ||||||||||||
* ↑ Boyd Barrett was a member of People Before Profit.
* ↑ Waters was endorsed by Anti-Corruption Ireland.

### 2016 general election

Seán Barrett was Ceann Comhairle at the dissolution of the 31st Dáil and therefore deemed to be returned automatically. The constituency was treated as a three-seater for the purposes of calculating the quota.
2016 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fine Gael | Seán Barrett | N/A | Returned automatically | Returned automatically | Returned automatically | Returned automatically | Returned automatically | Returned automatically | Returned automatically |
| | Fine Gael | Mary Mitchell O'Connor | 18.3 | 10,817 | 11,088 | 11,130 | 11,433 | 11,967 | 12,393 | 14,941 |
| | Fine Gael | Maria Bailey | 17.7 | 10,489 | 10,882 | 10,934 | 11,270 | 11,854 | 12,422 | 15,198 |
| | AAA–PBP | Richard Boyd Barrett | 16.5 | 9,775 | 10,008 | 12,215 | 13,287 | 14,761 | 15,718 | |
| | Fianna Fáil | Mary Hanafin | 10.9 | 6,478 | 6,709 | 6,792 | 6,986 | 7,290 | 10,221 | 10,969 |
| | Labour | Carrie Smyth | 8.8 | 5,192 | 5,296 | 5,385 | 5,739 | 6,895 | 7,165 | |
| | Fianna Fáil | Cormac Devlin | 7.9 | 4,665 | 4,877 | 5,055 | 5,265 | 5,564 | | |
| | Green | Ossian Smyth | 5.9 | 3,478 | 3,677 | 3,833 | 4,750 | | | |
| | Sinn Féin | Shane O'Brien | 5.3 | 3,167 | 3,209 | | | | | |
| | Independent | Carol Hunt | 5.3 | 3,152 | 3,410 | 3,610 | | | | |
| | Renua | Frank Cronin | 3.1 | 1,812 | | | | | | |
| | Direct Democracy | Raymond Whitehead | 0.4 | 213 | | | | | | |
| Electorate: 92,248 Valid: 59,238 Spoilt: 401 Quota: 14,810 Turnout: 59,639 (64.7%) |||||||||||

### 2011 general election

2011 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| | Labour | Eamon Gilmore | 20.2 | 11,468 | | | | | | | | | | |
| | Fine Gael | Seán Barrett | 18.5 | 10,504 | 10,516 | 10,538 | 10,573 | 10,666 | 10,913 | 11,274 | 11,723 | | | |
| | Fine Gael | Mary Mitchell O'Connor | 16.0 | 9,087 | 9,094 | 9,120 | 9,163 | 9,239 | 9,568 | 9,998 | 10,309 | 10,451 | 13,005 | |
| | People Before Profit | Richard Boyd Barrett | 10.9 | 6,206 | 6,228 | 6,271 | 6,332 | 6,384 | 6,795 | 7,132 | 7,413 | 7,453 | 9,914 | 10,794 |
| | Labour | Ivana Bacik | 10.1 | 5,749 | 5,826 | 5,857 | 5,904 | 5,916 | 6,200 | 6,953 | 7,260 | 7,306 | | |
| | Fianna Fáil | Mary Hanafin | 9.0 | 5,090 | 5,096 | 5,107 | 5,130 | 5,217 | 5,392 | 5,606 | 7,874 | 8,013 | 8,889 | 9,420 |
| | Fianna Fáil | Barry Andrews | 6.2 | 3,542 | 3,545 | 3,554 | 3,569 | 3,594 | 3,713 | 3,886 | | | | |
| | Green | Ciarán Cuffe | 3.8 | 2,156 | 2,158 | 2,187 | 2,222 | 2,234 | 2,429 | | | | | |
| | Independent | Victor Boyhan | 1.5 | 834 | 835 | 851 | 912 | 941 | | | | | | |
| | Independent | Carl Haughton | 0.8 | 456 | 457 | 500 | 563 | 594 | | | | | | |
| | Independent | Trevor Patton | 0.8 | 445 | 446 | 467 | 500 | 515 | | | | | | |
| | Christian Solidarity | Daire Fitzgerald | 0.8 | 434 | 434 | 441 | 450 | | | | | | | |
| | New Vision | Nick Crawford | 0.7 | 394 | 394 | 438 | | | | | | | | |
| | Independent | Mike Deegan | 0.5 | 311 | 311 | | | | | | | | | |
| Electorate: 80,115 Valid: 56,676 Spoilt: 481 (0.8%) Quota: 11,336 Turnout: 57,157 (71.3%) |||||||||||||||
* ↑ Boyd Barrett campaigned as a member of the United Left Alliance.

### 2007 general election

2007 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| | Fianna Fáil | Mary Hanafin | 20.2 | 11,884 | | | | | | | | | |
| | Fianna Fáil | Barry Andrews | 14.6 | 8,587 | 9,977 | | | | | | | | |
| | Labour | Eamon Gilmore | 12.2 | 7,127 | 7,254 | 7,492 | 7,514 | 8,720 | 9,225 | 9,937 | | | |
| | Fine Gael | Seán Barrett | 9.2 | 5,361 | 5,418 | 5,456 | 5,465 | 5,640 | 6,274 | 8,581 | 8,633 | 13,090 | |
| | People Before Profit | Richard Boyd Barrett | 8.9 | 5,233 | 5,294 | 5,798 | 5,813 | 5,943 | 6,362 | 6,705 | 6,732 | 7,139 | 7,890 |
| | Green | Ciarán Cuffe | 7.7 | 4,534 | 4,626 | 4,865 | 4,886 | 5,173 | 6,045 | 6,368 | 6,399 | 7,357 | 9,910 |
| | Fine Gael | John Bailey | 7.3 | 4,309 | 4,359 | 4,406 | 4,415 | 4,547 | 4,932 | | | | |
| | Fine Gael | Eugene Regan | 7.1 | 4,162 | 4,209 | 4,230 | 4,237 | 4,497 | 5,186 | 6,248 | 6,289 | | |
| | Progressive Democrats | Fiona O'Malley | 6.7 | 3,959 | 4,165 | 4,212 | 4,309 | 4,437 | | | | | |
| | Labour | Oisín Quinn | 3.9 | 2,265 | 2,316 | 2,366 | 2,377 | | | | | | |
| | Sinn Féin | Eoin Ó Broin | 2.2 | 1,292 | 1,309 | | | | | | | | |
| Electorate: 89,035 Valid: 58,713 Spoilt: 397 (0.7%) Quota: 9,786 Turnout: 59,110 (66.4%) ||||||||||||||

### 2002 general election

2002 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| | Fianna Fáil | Mary Hanafin | 16.4 | 8,818 | 8,827 | 8,920 | 8,950 | | | | | | | |
| | Labour | Eamon Gilmore | 15.4 | 8,271 | 8,284 | 8,297 | 8,343 | 8,375 | 8,414 | 8,762 | 8,942 | | | |
| | Fianna Fáil | Barry Andrews | 13.8 | 7,425 | 7,431 | 7,449 | 7,459 | 7,483 | 7,519 | 7,676 | 7,742 | 8,289 | 8,367 | 8,918 |
| | Progressive Democrats | Fiona O'Malley | 13.4 | 7,166 | 7,171 | 7,188 | 7,217 | 7,260 | 7,309 | 7,498 | 7,577 | 7,707 | 8,259 | 9,264 |
| | Green | Ciarán Cuffe | 9.3 | 5,002 | 5,012 | 5,033 | 5,108 | 5,177 | 5,306 | 5,695 | 5,799 | 6,599 | 6,918 | 8,670 |
| | Labour | Niamh Bhreathnach | 7.3 | 3,893 | 3,899 | 3,900 | 3,935 | 3,970 | 4,002 | 4,102 | 4,247 | 4,550 | 5,090 | |
| | Fine Gael | Helen Keogh | 6.0 | 3,229 | 3,230 | 3,233 | 3,252 | 3,272 | 3,288 | 3,342 | 3,869 | 3,916 | | |
| | Fine Gael | Liam T. Cosgrave | 5.9 | 3,135 | 3,137 | 3,153 | 3,167 | 3,181 | 3,205 | 3,272 | 3,911 | 3,996 | 6,326 | 7,530 |
| | Sinn Féin | Michael O'Brien | 4.0 | 2,159 | 2,160 | 2,173 | 2,176 | 2,192 | 2,205 | 2,405 | 2,421 | | | |
| | Fine Gael | John Bailey | 3.2 | 1,705 | 1,706 | 1,712 | 1,720 | 1,735 | 1,745 | 1,795 | | | | |
| | Socialist Workers | Richard Boyd Barrett | 1.6 | 876 | 878 | 880 | 890 | 916 | 932 | | | | | |
| | Independent | Patrick O'Keefe | 1.1 | 593 | 596 | 614 | 628 | 684 | 724 | | | | | |
| | Independent | Vincent MacDowell | 0.6 | 345 | 354 | 369 | 394 | 418 | | | | | | |
| | Independent | Denis O'Buachalla | 0.7 | 346 | 353 | 361 | 380 | | | | | | | |
| | Ind. Health Alliance | Heather Williams | 0.6 | 319 | 323 | 338 | | | | | | | | |
| | Christian Solidarity | Michael Redmond | 0.5 | 265 | 267 | | | | | | | | | |
| | Independent | Barbara Hyland | 0.2 | 86 | | | | | | | | | | |
| Electorate: 91,522 Valid: 53,633 Spoilt: 438 (0.8%) Quota: 8,939 Turnout: 54,071 (59.1%) |||||||||||||||

### 1997 general election

1997 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fine Gael | Seán Barrett | 17.0 | 9,223 | | | | | | |
| | Fianna Fáil | David Andrews | 16.5 | 8,933 | 8,940 | 9,195 | | | | |
| | Fine Gael | Monica Barnes | 13.9 | 7,576 | 7,701 | 7,945 | 8,145 | 8,778 | 8,801 | 9,857 |
| | Democratic Left | Eamon Gilmore | 13.9 | 7,534 | 7,551 | 7,819 | 8,000 | 8,949 | 8,967 | 9,381 |
| | Fianna Fáil | Mary Hanafin | 9.4 | 5,079 | 5,080 | 5,245 | 6,198 | 6,591 | 6,668 | 9,584 |
| | Labour | Niamh Bhreathnach | 8.6 | 4,698 | 4,719 | 4,876 | 4,947 | 5,500 | 5,509 | 5,846 |
| | Progressive Democrats | Helen Keogh | 8.6 | 4,636 | 4,640 | 4,800 | 4,975 | 5,400 | 5,425 | |
| | Green | Vincent MacDowell | 5.1 | 2,762 | 2,764 | 3,139 | 3,454 | | | |
| | Christian Solidarity | Gerard Casey | 3.7 | 2,000 | 2,002 | 2,093 | | | | |
| | Independent | Paddy Madigan | 2.0 | 1,082 | 1,083 | | | | | |
| | Independent | Olaf Tyaransen | 0.6 | 348 | 348 | | | | | |
| | Independent | Jog Monster Raving Looney Abum | 0.5 | 288 | 288 | | | | | |
| | Independent | Hazel Allshire-Tyrrell | 0.1 | 53 | 53 | | | | | |
| | Independent | Rory Stokes | 0.1 | 41 | 41 | | | | | |
| Electorate: 87,994 Valid: 54,253 Spoilt: 393 (0.7%) Quota: 9,043 Turnout: 54,646 (62.1%) |||||||||||

### 1992 general election

1992 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| | Fianna Fáil | David Andrews | 22.6 | 13,418 | | | | | | | | | | | |
| | Labour | Niamh Bhreathnach | 17.0 | 10,074 | | | | | | | | | | | |
| | Democratic Left | Eamon Gilmore | 11.9 | 7,045 | 7,263 | 7,269 | 7,304 | 7,558 | 7,731 | 7,799 | 8,480 | 8,761 | 9,012 | 9,429 | 9,788 |
| | Progressive Democrats | Helen Keogh | 10.9 | 6,497 | 6,708 | 6,709 | 6,719 | 6,735 | 6,828 | 6,856 | 7,235 | 7,416 | 7,760 | 8,856 | 10,038 |
| | Fine Gael | Seán Barrett | 8.2 | 4,852 | 5,095 | 5,097 | 5,102 | 5,138 | 5,239 | 5,256 | 5,376 | 5,523 | 7,567 | 11,590 | |
| | Fine Gael | Monica Barnes | 7.2 | 4,261 | 4,456 | 4,461 | 4,465 | 4,479 | 4,514 | 4,545 | 4,779 | 4,971 | 6,068 | | |
| | Fine Gael | Liam T. Cosgrave | 6.2 | 3,683 | 3,802 | 3,803 | 3,804 | 3,819 | 4,196 | 4,207 | 4,316 | 4,422 | | | |
| | Fianna Fáil | Brian Hillery | 5.0 | 2,973 | 4,146 | 4,151 | 4,153 | 4,237 | 4,625 | 4,629 | 4,772 | 7,254 | 7,602 | 7,757 | 7,910 |
| | Fianna Fáil | Betty Coffey | 3.6 | 2,119 | 3,346 | 3,350 | 3,355 | 3,446 | 3,533 | 3,538 | 3,688 | | | | |
| | Green | Vincent MacDowell | 3.0 | 1,784 | 1,849 | 1,863 | 1,882 | 2,035 | 2,323 | 2,337 | | | | | |
| | Independent | Michael Quinn | 2.9 | 1,705 | 1,740 | 1,749 | 1,756 | 1,823 | | | | | | | |
| | Sinn Féin | Kevin Barry Fitzpatrick | 1.4 | 801 | 831 | 832 | 849 | | | | | | | | |
| | Workers' Party | Eamonn Murdock | 0.2 | 110 | 115 | 115 | | | | | | | | | |
| | Independent | Martin Joseph McAneny | 0.1 | 48 | 49 | | | | | | | | | | |
| Electorate: 87,495 Valid: 59,370 Spoilt: 679 (1.1%) Quota: 9,896 Turnout: 60,049 (68.6%) ||||||||||||||||

### 1989 general election

1989 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| | Fianna Fáil | David Andrews | 19.0 | 9,980 | | | | | | | | | | |
| | Fine Gael | Seán Barrett | 13.2 | 6,940 | 6,990 | 6,993 | 7,022 | 7,070 | 7,282 | 7,514 | 7,584 | 7,750 | 11,002 | |
| | Workers' Party | Eamon Gilmore | 12.8 | 6,729 | 6,769 | 6,777 | 7,141 | 7,348 | 8,417 | 9,379 | | | | |
| | Fine Gael | Liam T. Cosgrave | 10.4 | 5,448 | 5,472 | 5,482 | 5,511 | 5,550 | 5,680 | 5,834 | 5,910 | 6,021 | | |
| | Fine Gael | Monica Barnes | 9.1 | 4,786 | 4,817 | 4,825 | 4,829 | 4,914 | 5,162 | 5,663 | 5,839 | 6,034 | 7,634 | 9,506 |
| | Progressive Democrats | Geraldine Kennedy | 9.0 | 4,710 | 4,735 | 4,743 | 4,755 | 4,821 | 5,050 | 5,660 | 5,861 | 6,049 | 6,629 | 6,958 |
| | Fianna Fáil | Brian Hillery | 7.2 | 3,797 | 4,163 | 4,171 | 4,214 | 4,231 | 4,291 | 4,508 | 4,548 | 8,079 | 8,337 | 8,397 |
| | Fianna Fáil | Betty Coffey | 6.4 | 3,330 | 3,994 | 3,998 | 4,090 | 4,121 | 4,214 | 4,469 | 4,522 | | | |
| | Green | Patricia Joan Griffin | 5.1 | 2,686 | 2,700 | 2,739 | 2,911 | 3,017 | 3,298 | | | | | |
| | Labour | Flor O'Mahony | 3.4 | 1,761 | 1,770 | 1,779 | 1,815 | 2,474 | | | | | | |
| | Labour | Jane Dillon-Byrne | 2.3 | 1,226 | 1,234 | 1,237 | 1,278 | | | | | | | |
| | Sinn Féin | Kevin Barry Fitzpatrick | 1.8 | 940 | 948 | 951 | | | | | | | | |
| | Independent | Ann McGoldrick | 0.2 | 110 | 110 | | | | | | | | | |
| Electorate: 81,169 Valid: 52,443 Quota: 8,741 Turnout: 64.6% |||||||||||||||

### 1987 general election

1987 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| | Fianna Fáil | David Andrews | 15.1 | 8,414 | 8,418 | 8,456 | 8,510 | 8,744 | 8,777 | 10,387 | | | | | | |
| | Fine Gael | Seán Barrett | 13.1 | 7,284 | 7,294 | 7,316 | 7,358 | 7,409 | 7,508 | 7,564 | 7,582 | 8,015 | 10,989 | | | |
| | Labour | Barry Desmond | 11.6 | 6,484 | 6,500 | 6,525 | 6,742 | 6,828 | 6,897 | 6,979 | 7,012 | 8,555 | 8,935 | 9,043 | 9,575 | |
| | Progressive Democrats | Geraldine Kennedy | 9.4 | 5,228 | 5,241 | 5,254 | 5,322 | 5,351 | 5,797 | 5,854 | 5,878 | 6,293 | 6,607 | 6,772 | 10,991 | |
| | Fine Gael | Monica Barnes | 8.8 | 4,923 | 4,927 | 4,940 | 5,052 | 5,070 | 5,096 | 5,111 | 5,118 | 5,311 | 6,396 | 7,690 | 8,319 | 9,810 |
| | Fine Gael | Liam T. Cosgrave | 8.7 | 4,870 | 4,879 | 4,893 | 4,930 | 4,959 | 4,998 | 5,040 | 5,048 | 5,290 | | | | |
| | Progressive Democrats | Helen Keogh | 7.5 | 4,203 | 4,211 | 4,223 | 4,292 | 4,307 | 5,173 | 5,214 | 5,230 | 5,475 | 5,704 | 5,824 | | |
| | Workers' Party | Eamon Gilmore | 7.3 | 4,054 | 4,070 | 4,087 | 4,260 | 4,740 | 4,779 | 4,847 | 4,872 | | | | | |
| | Fianna Fáil | Edward McDonald | 5.9 | 3,265 | 3,270 | 3,279 | 3,317 | 3,431 | 3,445 | 4,469 | 5,441 | 6,285 | 6,413 | 6,431 | 6,572 | 6,788 |
| | Fianna Fáil | Richard Conroy | 5.2 | 2,897 | 2,903 | 2,919 | 2,947 | 3,018 | 3,033 | | | | | | | |
| | Progressive Democrats | Larry Lohan | 2.9 | 1,592 | 1,594 | 1,601 | 1,645 | 1,656 | | | | | | | | |
| | Sinn Féin | Kevin Fitzpatrick | 2.2 | 1,202 | 1,203 | 1,212 | 1,253 | | | | | | | | | |
| | Green | Ann McGoldrick | 1.7 | 929 | 954 | 982 | | | | | | | | | | |
| | Independent | Patrick O'Reilly | 0.4 | 233 | 236 | | | | | | | | | | | |
| | Independent | Barbara Hyland | 0.2 | 124 | | | | | | | | | | | | |
| Electorate: 77,325 Valid: 55,702 Quota: 9,284 Turnout: 72.0% |||||||||||||||||

### November 1982 general election

November 1982 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fine Gael | Monica Barnes | 20.2 | 10,115 | | | | | | |
| | Fine Gael | Seán Barrett | 19.0 | 9,511 | | | | | | |
| | Fianna Fáil | David Andrews | 15.2 | 7,643 | 7,659 | 7,691 | 7,719 | 7,735 | 8,048 | 8,324 |
| | Fine Gael | Liam T. Cosgrave | 13.4 | 6,732 | 8,191 | 9,131 | | | | |
| | Labour | Barry Desmond | 12.2 | 6,130 | 6,349 | 6,483 | 7,128 | 7,176 | 7,246 | 8,941 |
| | Fianna Fáil | Martin O'Donoghue | 8.1 | 4,053 | 4,061 | 4,073 | 4,090 | 4,101 | 4,308 | 4,467 |
| | Fianna Fáil | Valerie Goulding | 5.0 | 2,492 | 2,502 | 2,509 | 2,523 | 2,533 | 2,815 | 2,975 |
| | Workers' Party | Eamon Gilmore | 2.7 | 1,368 | 1,376 | 1,386 | 1,405 | 1,463 | 1,492 | |
| | Democratic Socialist | John de Courcy Ireland | 2.1 | 1,036 | 1,057 | 1,063 | 1,091 | 1,140 | 1,146 | |
| | Fianna Fáil | Owen Hammond | 1.8 | 893 | 894 | 896 | 901 | 918 | | |
| | Independent | Anthony Clarke | 0.4 | 205 | 214 | 218 | 229 | | | |
| Electorate: 70,819 Valid: 50,178 Quota: 8,364 Turnout: 70.8% |||||||||||

### February 1982 general election

February 1982 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| | Fine Gael | Seán Barrett | 23.0 | 11,157 | | | | | | | | |
| | Fianna Fáil | David Andrews | 16.4 | 7,931 | 7,999 | 8,010 | 8,019 | 8,026 | 8,135 | | | |
| | Labour | Barry Desmond | 16.0 | 7,776 | 8,209 | | | | | | | |
| | Fine Gael | Liam T. Cosgrave | 14.9 | 7,202 | 8,605 | | | | | | | |
| | Fianna Fáil | Martin O'Donoghue | 14.3 | 6,944 | 6,973 | 6,978 | 6,983 | 6,992 | 7,030 | 7,110 | 7,324 | 8,259 |
| | Fine Gael | Monica Barnes | 10.4 | 5,021 | 6,133 | 6,625 | 6,727 | 6,737 | 6,784 | 6,954 | 7,177 | 7,242 |
| | Fianna Fáil | Clare Ó Méalóid | 2.0 | 945 | 950 | 952 | 953 | 958 | 983 | 1,011 | 1,094 | |
| | Irish Republican Socialist | Osgur Breatnach | 1.2 | 574 | 584 | 587 | 588 | 764 | 781 | 921 | | |
| | Independent | Ubi Dwyer | 0.9 | 418 | 422 | 424 | 425 | 439 | 501 | | | |
| | Independent | Martin Donohoe | 0.7 | 318 | 3222 | 325 | 328 | 332 | | | | |
| | Irish Republican Socialist | Marion Kennedy | 0.5 | 225 | 228 | 229 | 230 | | | | | |
| Electorate: 69,091 Valid: 48,511 Quota: 8,086 Turnout: 70.2% |||||||||||||

### 1981 general election

1981 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| | Fianna Fáil | David Andrews | 19.7 | 9,471 | | | | | | | | | |
| | Fine Gael | Seán Barrett | 17.0 | 8,207 | | | | | | | | | |
| | Fine Gael | Liam T. Cosgrave | 15.2 | 7,296 | 7,334 | 7,355 | 7,427 | 7,462 | 7,532 | 7,585 | 7,654 | 8,512 | |
| | Fianna Fáil | Martin O'Donoghue | 12.6 | 6,045 | 6680 | 6717 | 6720 | 6751 | 6850 | 7659 | 7750 | 7830 | 7,855 |
| | Labour | Barry Desmond | 12.3 | 5,935 | 6,022 | 6,192 | 6,212 | 6,658 | 6,920 | 7,077 | 8,095 | | |
| | Fine Gael | Monica Barnes | 7.8 | 3,739 | 3,776 | 3,794 | 3,847 | 3,893 | 3,983 | 4,013 | 4,223 | 5,097 | 5,548 |
| | Fine Gael | Aine Elliott | 3.5 | 1,674 | 1,682 | 1,690 | 1,711 | 1,731 | 1,796 | 1,812 | 1,923 | | |
| | Fianna Fáil | William Harvey | 2.6 | 1,270 | 1,436 | 1,441 | 1,442 | 1,451 | 1,485 | | | | |
| | Fianna Fáil | Hazel Boland | 2.6 | 1,244 | 1,681 | 1,701 | 1,703 | 1,723 | 1,778 | 2,142 | 2,183 | 2,226 | 2,233 |
| | Labour | Jane Dillon Byrne | 2.1 | 1,026 | 1,036 | 1,193 | 1,195 | 1,376 | 1,609 | 1,625 | | | |
| | Independent | Ubi Dwyer | 1.9 | 927 | 933 | 1,002 | 1,003 | 1,030 | | | | | |
| | Labour | Frank Smyth | 1.6 | 761 | 772 | 831 | 834 | | | | | | |
| | Socialist Labour | Dermot Boucher | 1.2 | 575 | 582 | | | | | | | | |
| Electorate: 69,091 Valid: 48,170 Quota: 8,029 Turnout: 69.7% ||||||||||||||

### 1977 general election

1977 general election: Dún Laoghaire :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fine Gael | Liam Cosgrave | 28.9 | 11,024 | | | | | | |
| | Fianna Fáil | David Andrews | 23.0 | 8,754 | | | | | | |
| | Labour | Barry Desmond | 12.2 | 4,642 | 5,235 | 5,296 | 6,001 | 6,081 | 6,503 | 8,015 |
| | Fianna Fáil | Martin O'Donoghue | 10.8 | 4,099 | 4,140 | 4,555 | 4,593 | 6,897 | 6,946 | 7,936 |
| | Independent | Una O'Higgins-O'Malley | 8.7 | 3,305 | 3,412 | 3,438 | 3,561 | 3,681 | 3,884 | |
| | Fianna Fáil | John O'Connor | 5.2 | 1,984 | 2,017 | 2,606 | 2,649 | | | |
| | Fine Gael | Michael Carroll | 4.7 | 1,791 | 2,964 | 2,993 | 3,048 | 3,096 | 5,316 | 6,117 |
| | Fine Gael | Percy Dockrell | 3.9 | 1,472 | 2,886 | 2,896 | 2,950 | 2,986 | | |
| | Labour | Jack Loughran | 2.4 | 898 | 948 | 960 | | | | |
| | Independent | Frank Stein | 0.2 | 86 | 87 | 87 | | | | |
| Electorate: 54,064 Valid: 38,055 Quota: 7,612 Turnout: 70.4% |||||||||||