# Dublin County (Dáil constituency)

Dublin County was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1921 to 1969. The method of election was proportional representation by means of the single transferable vote (PR-STV).

## History and boundaries

The constituency was created in 1921 by the Government of Ireland Act 1920 as a 6-seat constituency for the Southern Ireland House of Commons and a two-seat constituency for the United Kingdom House of Commons at Westminster, combining the former Westminster constituencies of Dublin Pembroke, Dublin Rathmines, North Dublin and South Dublin. At the 1921 election for the Southern Ireland House of Commons, the four seats were won uncontested by Sinn Féin, who treated it as part of the election to the Second Dáil. It was never used as a Westminster constituency; under s. 1(4) of the Irish Free State (Agreement) Act 1922, no writ was to be issued "for a constituency in Ireland other than a constituency in Northern Ireland". Therefore, no vote was held in County Dublin at the 1922 United Kingdom general election on 15 November 1922, shortly before the Irish Free State left the United Kingdom on 6 December 1922.
It was restructured by the Electoral Act 1923, the first electoral act of the new state, becoming an 8-seat constituency, first used at the 1923 general election to the 4th Dáil. It was revised at subsequent revisions, taking into account changes in the boundary and city, before its abolition at the 1969 general election. It was replaced by Dublin County North and Dublin County South.
Throughout its history the constituency consisted primarily of the area of County Dublin, excluding the area of Dublin city. However, at various points it also included some territory from within the boundaries of Dublin City.

## TDs

Teachtaí Dála (TDs) for Dublin County 1921–1969 :
| Key to parties  CnaP = Clann na Poblachta  CnaG = Cumann na nGaedheal  FP = Farmers' Party  FF = Fianna Fáil  FG = Fine Gael  Ind = Independent  Lab = Labour  Rep = Republican  SF = Sinn Féin  AT-SF = Sinn Féin (Anti-Treaty)  PT-SF = Sinn Féin (Pro-Treaty) ||||||||||||||||||
| Dáil | Election | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) |
| 2nd | 1921 | | Michael Derham (SF) | | George Gavan Duffy (SF) | | Séamus Dwyer (SF) | | Desmond FitzGerald (SF) | | Frank Lawless (SF) | | Margaret Pearse (SF) | 6 seats 1921–1923 | 6 seats 1921–1923 | 6 seats 1921–1923 | 6 seats 1921–1923 |
| 3rd | 1922 | | Michael Derham (PT-SF) | | George Gavan Duffy (PT-SF) | | Thomas Johnson (Lab) | | Desmond FitzGerald (PT-SF) | | Darrell Figgis (Ind) | | John Rooney (FP) | 6 seats 1921–1923 | 6 seats 1921–1923 | 6 seats 1921–1923 | 6 seats 1921–1923 |
| 4th | 1923 | | Michael Derham (CnaG) | | Bryan Cooper (Ind) | | Thomas Johnson (Lab) | | Desmond FitzGerald (CnaG) | | Darrell Figgis (Ind) | | John Good (Ind) | | Kathleen Lynn (Rep) | | Kevin O'Higgins (CnaG) |
| 4th | 1924 by-election | | Batt O'Connor (CnaG) | | Bryan Cooper (Ind) | | Thomas Johnson (Lab) | | Desmond FitzGerald (CnaG) | | Darrell Figgis (Ind) | | John Good (Ind) | | Kathleen Lynn (Rep) | | Kevin O'Higgins (CnaG) |
| 4th | 1926 by-election | | Batt O'Connor (CnaG) | | Bryan Cooper (Ind) | | Thomas Johnson (Lab) | | Desmond FitzGerald (CnaG) | | William Norton (Lab) | | John Good (Ind) | | Kathleen Lynn (Rep) | | Kevin O'Higgins (CnaG) |
| 5th | 1927 (Jun) | | Batt O'Connor (CnaG) | | Bryan Cooper (Ind) | | Thomas Johnson (Lab) | | Desmond FitzGerald (CnaG) | | Patrick Belton (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Kevin O'Higgins (CnaG) |
| 5th | 1927 by-election | | Batt O'Connor (CnaG) | | Bryan Cooper (Ind) | | Thomas Johnson (Lab) | | Desmond FitzGerald (CnaG) | | Patrick Belton (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 6th | 1927 (Sep) | | Batt O'Connor (CnaG) | | Bryan Cooper (CnaG) | | Joseph Murphy (Ind) | | Desmond FitzGerald (CnaG) | | Seán Brady (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 6th | 1930 by-election | | Batt O'Connor (CnaG) | | Thomas Finlay (CnaG) | | Joseph Murphy (Ind) | | Desmond FitzGerald (CnaG) | | Seán Brady (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 7th | 1932 | | Batt O'Connor (CnaG) | | Thomas Finlay (CnaG) | | Patrick Curran (Lab) | | Henry Dockrell (CnaG) | | Seán Brady (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 8th | 1933 | | Batt O'Connor (CnaG) | | John A. Costello (CnaG) | | Margaret Mary Pearse (FF) | | Henry Dockrell (CnaG) | | Seán Brady (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 8th | 1935 by-election | | Cecil Lavery (FG) | | John A. Costello (CnaG) | | Margaret Mary Pearse (FF) | | Henry Dockrell (CnaG) | | Seán Brady (FF) | | John Good (Ind) | | Seán MacEntee (FF) | | Gearóid O'Sullivan (CnaG) |
| 9th | 1937 | | Cecil Lavery (FG) | | Henry Dockrell (FG) | | Gerrard McGowan (Lab) | | Patrick Fogarty (FF) | | Seán Brady (FF) | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 |
| 10th | 1938 | | Patrick Belton (FG) | | Henry Dockrell (FG) | | Thomas Mullen (FF) | | Patrick Fogarty (FF) | | Seán Brady (FF) | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 |
| 11th | 1943 | | Liam Cosgrave (FG) | | Henry Dockrell (FG) | | James Tunney (Lab) | | Patrick Fogarty (FF) | | Seán Brady (FF) | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 |
| 12th | 1944 | | Liam Cosgrave (FG) | | Henry Dockrell (FG) | | Patrick Burke (FF) | | Patrick Fogarty (FF) | | Seán Brady (FF) | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 |
| 12th | 1947 by-election | | Liam Cosgrave (FG) | | Henry Dockrell (FG) | | Patrick Burke (FF) | | Seán MacBride (CnaP) | | Seán Brady (FF) | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 | 5 seats 1937–1948 |
| 13th | 1948 | | Éamon Rooney (FG) | | Seán Dunne (Lab) | | Patrick Burke (FF) | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 |
| 14th | 1951 | | Éamon Rooney (FG) | | Seán Dunne (Lab) | | Patrick Burke (FF) | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 |
| 15th | 1954 | | Éamon Rooney (FG) | | Seán Dunne (Lab) | | Patrick Burke (FF) | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 |
| 16th | 1957 | | Éamon Rooney (FG) | | Kevin Boland (FF) | | Patrick Burke (FF) | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 | 3 seats 1948–1961 |
| 17th | 1961 | | Éamon Rooney (FG) | | Kevin Boland (FF) | | Patrick Burke (FF) | | Mark Clinton (FG) | | Seán Dunne (Ind) | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 |
| 18th | 1965 | | Des Foley (FF) | | Kevin Boland (FF) | | Patrick Burke (FF) | | Mark Clinton (FG) | | Seán Dunne (Lab) | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 | 5 seats 1961–1969 |
| 19th | 1969 | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South | Constituency abolished. See Dublin County North and Dublin County South |
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.

## Elections
### 1965 general election

1965 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Patrick Burke | 20.9 | 9,737 | | | | | |
| | Fianna Fáil | Kevin Boland | 19.7 | 9,183 | | | | | |
| | Labour | Seán Dunne | 14.9 | 6,953 | 7,125 | 7,198 | 8,558 | | |
| | Fine Gael | Mark Clinton | 12.6 | 5,872 | 5,953 | 6,032 | 6,124 | 7,396 | 7,525 |
| | Fine Gael | Éamon Rooney | 8.5 | 3,951 | 4,016 | 4,030 | 4,093 | 5,476 | 5,566 |
| | Fianna Fáil | Des Foley | 7.2 | 3,367 | 4,426 | 5,279 | 5,381 | 5,477 | 8,709 |
| | Fine Gael | James McMahon | 6.2 | 2,876 | 2,899 | 2,919 | 3,010 | | |
| | Fianna Fáil | Seán Walsh | 6.1 | 2,858 | 3,391 | 3,757 | 3,816 | 3,892 | |
| | Labour | Michael Gannon | 3.8 | 1,763 | 1,806 | 1,823 | | | |
| Electorate: 73,571 Valid: 46,560 Quota: 7,761 Turnout: 63.3% ||||||||||

### 1961 general election

1961 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fianna Fáil | Patrick Burke | 21.9 | 7,651 | | | | | | |
| | Fianna Fáil | Kevin Boland | 21.3 | 7,438 | | | | | | |
| | Fine Gael | Éamon Rooney | 12.5 | 4,355 | 4,520 | 4,563 | 4,827 | 5,034 | 5,872 | |
| | Independent | Seán Dunne | 10.6 | 3,711 | 3,941 | 4,050 | 4,109 | 4,481 | 4,907 | 6,086 |
| | Fine Gael | Mark Clinton | 9.7 | 3,380 | 3,499 | 3,646 | 4,011 | 4,067 | 4,740 | 5,224 |
| | Fianna Fáil | Seán Walsh | 5.7 | 1,989 | 3,111 | 4,304 | 4,349 | 4,432 | 4,507 | 4,793 |
| | Fine Gael | James McMahon | 5.2 | 1,831 | 1,856 | 1,894 | 2,262 | 2,308 | | |
| | Labour | Michael Gannon | 5.1 | 1,780 | 1,863 | 1,894 | 1,929 | 2,769 | 2,939 | |
| | Labour | Patrick T. Murphy | 4.6 | 1,596 | 1,664 | 1,692 | 1,730 | | | |
| | Fine Gael | Sidney McCann | 3.3 | 1,162 | 1,185 | 1,218 | | | | |
| Electorate: 56,706 Valid: 34,893 Quota: 5,816 Turnout: 61.5% |||||||||||

### 1957 general election

1957 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Burke | 31.5 | 12,059 | | | | |
| | Fianna Fáil | Kevin Boland | 24.6 | 9,412 | 10,911 | | | |
| | Fine Gael | Éamon Rooney | 17.7 | 6,771 | 6,948 | 6,998 | 9,414 | 10,055 |
| | Labour | Patrick T. Murphy | 12.8 | 4,886 | 5,006 | 5,074 | 5,381 | 6,241 |
| | Fine Gael | Roland Burgess | 8.0 | 3,057 | 3,143 | 3,198 | | |
| | Fianna Fáil | Joseph Larkin | 5.4 | 2,058 | 2,674 | 3,851 | 4,150 | |
| Electorate: 65,305 Valid: 38,243 Quota: 9,561 Turnout: 58.6% |||||||||

### 1954 general election

1954 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 |
| | Fianna Fáil | Patrick Burke | 25.9 | 10,221 | | |
| | Labour | Seán Dunne | 23.5 | 9,290 | 9,714 | 11,548 |
| | Fine Gael | Éamon Rooney | 21.6 | 8,533 | 11,991 | |
| | Fianna Fáil | Kevin Boland | 18.3 | 7,238 | 7,499 | 7,779 |
| | Fine Gael | Roland Burgess | 10.7 | 4,223 | | |
| Electorate: 57,619 Valid: 39,505 Quota: 9,877 Turnout: 68.6% |||||||

### 1951 general election

1951 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Burke | 23.7 | 7,167 | 7,177 | 7,245 | 7,282 | 8,444 |
| | Labour | Seán Dunne | 23.3 | 7,023 | 7,066 | 7,609 | | |
| | Fine Gael | Éamon Rooney | 20.0 | 6,048 | 7,040 | 7,681 | | |
| | Fianna Fáil | Kevin Boland | 19.3 | 5,821 | 5,838 | 5,893 | 5,924 | 6,430 |
| | Fianna Fáil | David Byrne | 5.6 | 1,700 | 1,704 | 1,732 | 1,792 | |
| | Clann na Poblachta | McEllistrum O'Rahilly | 4.5 | 1,350 | 1,380 | | | |
| | Fine Gael | Richard Williams | 3.7 | 1,102 | | | | |
| Electorate: 43,934 Valid: 30,211 Quota: 7,553 Turnout: 68.76% |||||||||

### 1948 general election

1948 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Patrick Burke | 32.0 | 8,092 | | | | | |
| | Fine Gael | Éamon Rooney | 20.5 | 5,179 | 5,239 | 5,283 | 5,941 | 6,075 | 6,540 |
| | Labour | Seán Dunne | 15.9 | 4,029 | 4,154 | 4,202 | 4,233 | 4,393 | 5,242 |
| | Clann na Poblachta | Christopher McGonagle | 14.5 | 3,662 | 3,705 | 4,290 | 4,311 | 4,367 | 4,578 |
| | Fianna Fáil | Thomas Watkins | 6.6 | 1,662 | 1,835 | 1,849 | 1,886 | | |
| | Fianna Fáil | David Byrne | 4.7 | 1,193 | 2,531 | 2,549 | 2,563 | 3,985 | |
| | Fine Gael | John Joseph Sheedy | 3.0 | 765 | 776 | 785 | | | |
| | Clann na Poblachta | Laurence J. O'Connor | 2.9 | 726 | 740 | | | | |
| Electorate: 35,549 Valid: 25,308 Quota: 6,328 Turnout: 71.19% ||||||||||

### 1947 by-election

A by-election was held to fill the seat left vacant by death of the Fianna Fáil TD Patrick Fogarty. It was won by Seán MacBride of Clann na Poblachta.
1947 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 |
| | Fianna Fáil | Thomas Mullins | 28.8 | 16,261 | 17,399 | 20,197 |
| | Clann na Poblachta | Seán MacBride | 28.4 | 16,062 | 21,755 | 29,629 |
| | Fine Gael | Éamon Rooney | 25.0 | 14,116 | 15,361 | |
| | Labour | Seán Dunne | 17.8 | 10,067 | | |
| Electorate: 105,286 Valid: 56,506 Quota: 28,254 Turnout: 53.67% |||||||

### 1944 general election

Full figures of the last nine counts are unavailable. Ó Droighneáin, Lynch, Bennett and FitzGerald all lost their deposits.
1944 general election: Dublin County :
| 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 | Seán Brady | 22.8 | 14,493 | | | | | | | | | |
| | Fine Gael | Liam Cosgrave | 19.4 | 12,322 | | | | | | | | | |
| | Fianna Fáil | Patrick Fogarty | 13.3 | 8,455 | N/A | N/A | N/A | N/A | N/A | N/A | 10,905 | | |
| | Fine Gael | Henry Morgan Dockrell | 10.2 | 6,488 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10,698 |
| | Independent | Patrick Belton | 8.2 | 5,199 | | | | | | | | | |
| | Fianna Fáil | Michael O'Rourke | 7.6 | 4,798 | | | | | | | | | |
| | Fianna Fáil | Patrick Burke | 6.3 | 3,997 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11,049 |
| | Labour | James Tunney | 4.4 | 2,777 | | | | | | | | | |
| | Fine Gael | Desmond FitzGerald | 3.1 | 1,978 | | | | | | | | | |
| | Labour | Louisa Bennett | 2.4 | 1,509 | | | | | | | | | |
| | Labour | Gilbert Lynch | 1.4 | 885 | | | | | | | | | |
| | Ailtirí na hAiséirghe | Oisín Ó Droighneáin | 1.0 | 607 | | | | | | | | | |
| Electorate: 99,754 Valid: 63,508 Quota: 10,585 Turnout: 63.7% ||||||||||||||

### 1943 general election

Full figures for the third to the fourteenth counts are unavailable. Hickey, Costelloe, Ennis, Owens, Bobbett, Roe, O'Farrell and Watkins all lost their deposits.
1943 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | 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 | 14 | 15 |
| | Fianna Fáil | Seán Brady | 22.7 | 15,299 | | | | | | | | | | | | | | |
| | Fine Gael | Liam Cosgrave | 16.5 | 11,099 | 11,160 | N/A | N/A | 11,392 | | | | | | | | | | |
| | Fianna Fáil | Patrick Fogarty | 13.0 | 8,779 | 11,720 | | | | | | | | | | | | | |
| | Fine Gael | Henry Morgan Dockrell | 10.2 | 6,882 | 6,917 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12,496 |
| | Independent | Patrick Belton | 5.9 | 3,990 | 4,049 | N/A | | | | | | | | | | | | |
| | Fianna Fáil | Michael O'Rourke | 4.9 | 3,303 | 3,892 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8,777 |
| | Labour | Christopher Hannigan | 4.7 | 3,176 | 3,213 | N/A | | | | | | | | | | | | |
| | Fianna Fáil | Thomas Watkins | 4.4 | 2,954 | 3,154 | N/A | | | | | | | | | | | | |
| | Labour | James Tunney | 4.4 | 2,932 | 2,957 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9,306 |
| | Labour | J. T. O'Farrell | 3.9 | 2,654 | 2,693 | N/A | | | | | | | | | | | | |
| | Fine Gael | Patrick Roe | 2.7 | 1,815 | 1,827 | N/A | | | | | | | | | | | | |
| | Clann na Talmhan | Elizabeth F. Bobbett | 1.6 | 1,108 | 1,121 | N/A | | | | | | | | | | | | |
| | Labour | Gerard Owens | 1.5 | 1,018 | 1,033 | N/A | | | | | | | | | | | | |
| | Fine Gael | Mary Ennis | 1.4 | 969 | 985 | N/A | | | | | | | | | | | | |
| | Independent | William J. Costelloe | 1.3 | 881 | 910 | N/A | | | | | | | | | | | | |
| | Clann na Talmhan | Patrick J. Hickey | 0.7 | 455 | 463 | N/A | | | | | | | | | | | | |
| Electorate: 99,754 Valid: 67,314 Quota: 11,220 Turnout: 67.5% |||||||||||||||||||

### 1938 general election

1938 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Seán Brady | 22.1 | 13,085 | | | | | |
| | Fine Gael | Henry Morgan Dockrell | 15.0 | 8,900 | 8,989 | 8,989 | 9,028 | 9,115 | 9,774 |
| | Fine Gael | Patrick Belton | 14.8 | 8,750 | 8,794 | 8,794 | 8,841 | 8,900 | 10,039 |
| | Fianna Fáil | Patrick Fogarty | 12.9 | 7,660 | 9,965 | | | | |
| | Fine Gael | Cecil Lavery | 12.1 | 7,185 | 7,226 | 7,228 | 7,305 | 7,406 | 8,435 |
| | Labour | Martin O'Sullivan | 9.4 | 5,564 | 5,617 | 5,618 | 6,009 | 6,127 | |
| | Fianna Fáil | Thomas Mullen | 7.3 | 4,307 | 4,629 | 4,648 | 5,007 | 7,677 | 9,568 |
| | Fianna Fáil | Andrew McCarthy | 4.4 | 2,580 | 2,874 | 2,937 | 3,173 | | |
| | Independent | George Gilmore | 2.1 | 1,224 | 1,285 | 1,289 | | | |
| Electorate: 87,033 Valid: 59,255 Quota: 9,876 Turnout: 68.1% ||||||||||

### 1937 general election

1937 general election: Dublin County :
| 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 |
| | Fianna Fáil | Seán Brady | 19.1 | 11,096 | | | | | | | | |
| | Fine Gael | Henry Morgan Dockrell | 18.7 | 10,828 | | | | | | | | |
| | Labour | Gerrard McGowan | 11.1 | 6,412 | 6,454 | 6,465 | 6,672 | 6,792 | 6,962 | 7,111 | 7,633 | 9,306 |
| | Fianna Fáil | Margaret Mary Pearse | 10.7 | 6,204 | 6,651 | 6,653 | 6,743 | 6,755 | 6,826 | 6,857 | | |
| | Fianna Fáil | Patrick Fogarty | 10.4 | 6,048 | 6,907 | 6,913 | 7,009 | 7,145 | 7,193 | 7,209 | 12,700 | |
| | Independent | Patrick Belton | 9.5 | 5,497 | 5,519 | 5,569 | 5,830 | 6,236 | 6,594 | 7,544 | 7,874 | 8,205 |
| | Fine Gael | Cecil Lavery | 8.0 | 4,633 | 4,645 | 5,196 | 5,435 | 6,863 | 10,808 | | | |
| | Fine Gael | Gearóid O'Sullivan | 6.9 | 3,991 | 3,999 | 4,100 | 4,221 | 4,700 | | | | |
| | Fine Gael | James Ennis | 3.5 | 2,002 | 2,015 | 2,440 | 2,633 | | | | | |
| | Independent | John Corr | 2.2 | 1,255 | 1,286 | 1,306 | | | | | | |
| Electorate: 83,457 Valid: 57,966 Quota: 9,662 Turnout: 69.5% |||||||||||||

### 1935 by-election

A by-election was held to fill the seat left vacant by death of the Fine Gael TD Batt O'Connor. It was won for Fine Gael by Cecil Lavery.
1935 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count |
| Party | Party | Candidate | FPv% | 1 |
| | Fine Gael | Cecil Lavery | 57.2 | 43,671 |
| | Fianna Fáil | Thomas Mullen | 42.8 | 32,656 |
| Electorate: 128,239 Valid: 76,327 Quota: 38,164 Turnout: 59.5% |||||

### 1933 general election

1933 general election: Dublin County :
| 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 | Seán MacEntee | 17.3 | 15,644 | | | | | | | | | | | | |
| | Cumann na nGaedheal | Henry Morgan Dockrell | 12.9 | 11,710 | | | | | | | | | | | | |
| | Cumann na nGaedheal | John A. Costello | 12.1 | 10,941 | | | | | | | | | | | | |
| | Fianna Fáil | Seán Brady | 11.7 | 10,626 | | | | | | | | | | | | |
| | Independent | John Good | 9.9 | 8,916 | 8,937 | 9,458 | 9,525 | 9,532 | 9,565 | 10,145 | | | | | | |
| | Cumann na nGaedheal | Gearóid O'Sullivan | 7.8 | 7,030 | 7,057 | 7,287 | 7,428 | 7,431 | 7,469 | 7,926 | 7,940 | 8,133 | 9,439 | 11,126 | | |
| | Cumann na nGaedheal | Batt O'Connor | 6.4 | 5,816 | 5,849 | 6,147 | 6,326 | 6,330 | 6,384 | 6,762 | 6,787 | 7,195 | 9,379 | 12,609 | | |
| | Cumann na nGaedheal | John P. O'Connor | 4.3 | 3,898 | 3,915 | 4,052 | 4,109 | 4,112 | 4,132 | 4,330 | 4,341 | 4,498 | | | | |
| | Fianna Fáil | Margaret Mary Pearse | 4.3 | 3,876 | 6,442 | 6,444 | 6,445 | 6,606 | 6,698 | 6,812 | 6,813 | 7,933 | 8,023 | 8,078 | 8,164 | 8,199 |
| | Labour | Patrick Curran | 3.6 | 3,227 | 3,429 | 3,437 | 3,469 | 3,539 | 4,139 | 4,244 | 4,248 | | | | | |
| | National Centre Party | James Rooney | 3.1 | 2,833 | 2,856 | 2,870 | 2,882 | 2,885 | 2,901 | | | | | | | |
| | Fianna Fáil | Thomas Mullen | 2.8 | 2,520 | 5,142 | 5,144 | 5,146 | 5,451 | 5,557 | 5,627 | 5,628 | 7,126 | 7,179 | 7,299 | 7,370 | 7,409 |
| | Cumann na nGaedheal | James Ennis | 2.8 | 2,491 | 2,506 | 2,950 | 3,346 | 3,354 | 3,381 | 4,310 | 4,348 | 4,738 | 5,445 | | | |
| | Labour | Archie Heron | 1.0 | 924 | 991 | 994 | 997 | 1,008 | | | | | | | | |
| Electorate: 117,807 Valid: 90,452 Quota: 10,051 Turnout: 76.8% |||||||||||||||||

### 1932 general election

1932 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | 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 | 14 | 15 | 16 |
| | Cumann na nGaedheal | Henry Morgan Dockrell | 14.0 | 11,332 | | | | | | | | | | | | | | | |
| | Fianna Fáil | Seán MacEntee | 13.0 | 10,496 | | | | | | | | | | | | | | | |
| | Cumann na nGaedheal | Thomas Finlay | 11.3 | 9,096 | | | | | | | | | | | | | | | |
| | Fianna Fáil | Seán Brady | 10.4 | 8,386 | 8,392 | 9,236 | | | | | | | | | | | | | |
| | Independent | John Good | 8.7 | 7,048 | 7,571 | 7,578 | 7,589 | 7,590 | 7,597 | 7,610 | 7,645 | 7,744 | 7,859 | 8,759 | 8,804 | 9,482 | | | |
| | Cumann na nGaedheal | Batt O'Connor | 8.4 | 6,804 | 7,115 | 7,141 | 7,184 | 7,186 | 7,201 | 7,239 | 7,284 | 8,359 | 8,671 | 9,312 | | | | | |
| | Cumann na nGaedheal | Gearóid O'Sullivan | 5.8 | 4,668 | 4,857 | 4,862 | 4,891 | 4,892 | 4,909 | 4,985 | 4,998 | 5,383 | 5,488 | 5,765 | 5,922 | 6,304 | 6,432 | 7,618 | 8,136 |
| | Independent | William Crawford | 4.0 | 3,194 | 3,336 | 3,344 | 3,347 | 3,348 | 3,358 | 3,419 | 3,428 | 3,502 | 3,590 | 3,790 | 3,805 | 4,142 | 4,275 | | |
| | Labour | Patrick Curran | 3.4 | 2,768 | 2,774 | 2,794 | 2,795 | 2,800 | 2,813 | 3,198 | 3,294 | 3,323 | 4,714 | 4,876 | 4,891 | 5,372 | 5,397 | 5,963 | 7,609 |
| | Independent | John P. Cuffe | 3.2 | 2,607 | 2,640 | 2,654 | 2,657 | 2,661 | 2,689 | 2,733 | 2,800 | 2,872 | 3,055 | 3,431 | 3,462 | | | | |
| | Independent | Joseph Murphy | 3.2 | 2,548 | 2,632 | 2,661 | 2,668 | 2,669 | 2,686 | 2,737 | 2,760 | 2,905 | 3,055 | | | | | | |
| | Cumann na nGaedheal | John P. O'Connor | 2.9 | 2,308 | 2,426 | 2,435 | 2,445 | 2,448 | 2,472 | 2,500 | 2,519 | | | | | | | | |
| | Fianna Fáil | Pádraic Ó Máille | 2.7 | 2,195 | 2,196 | 2,497 | 2,498 | 2,595 | 3,175 | 3,230 | 4,364 | 4,444 | 4,603 | 4,737 | 4,782 | 5,078 | 5,115 | 5,313 | |
| | Labour | John M. Devitt | 2.6 | 2,093 | 2,102 | 2,117 | 2,118 | 2,121 | 2,144 | 2,587 | 2,622 | 2,861 | | | | | | | |
| | Cumann na nGaedheal | James Ennis | 2.3 | 1,881 | 2,799 | 2,804 | 2,825 | 2,826 | 2,839 | 2,850 | 2,945 | 3,200 | 3,357 | 3,540 | 3,579 | 4,310 | 4,408 | 5,666 | 5,893 |
| | Fianna Fáil | Richard Duke | 1.6 | 1,262 | 1,285 | 1,385 | 1,385 | 1,474 | 1,659 | 1,694 | | | | | | | | | |
| | Labour | Robert Tynan | 1.5 | 1,242 | 1,244 | 1,253 | 1,253 | 1,253 | 1,263 | | | | | | | | | | |
| | Fianna Fáil | Thomas O'Donnell | 0.9 | 756 | 758 | 897 | 898 | 961 | | | | | | | | | | | |
| Electorate: 115,156 Valid: 80,684 Quota: 8,965 Turnout: 70.1% ||||||||||||||||||||

### 1930 by-election

A by-election was held on 9 December 1930 to fill the seat in the 6th Dáil which had been left vacant by the death of Cumann na nGaedheal TD Bryan Cooper. It was won for Cumann na nGaedheal by Thomas Finlay.
1930 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count |
| Party | Party | Candidate | FPv% | 1 |
| | Cumann na nGaedheal | Thomas Finlay | 70.2 | 35,362 |
| | Fianna Fáil | Conor Maguire | 29.8 | 15,024 |
| Electorate: 113,260 Valid: 50,386 Quota: 25,194 Turnout: 44.5% |||||

### September 1927 general election

September 1927 general election: Dublin County :
| 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 |
| | Cumann na nGaedheal | Bryan Cooper | 21.4 | 15,462 | | | | | | | | | |
| | Cumann na nGaedheal | Gearóid O'Sullivan | 14.3 | 10,343 | | | | | | | | | |
| | Cumann na nGaedheal | Desmond FitzGerald | 12.8 | 9,227 | | | | | | | | | |
| | Fianna Fáil | Seán MacEntee | 8.3 | 5,954 | 5,971 | 5,983 | 5,993 | 6,614 | 7,878 | 9,147 | | | |
| | Fianna Fáil | Seán Brady | 7.8 | 5,658 | 5,665 | 5,676 | 5,679 | 6,035 | 8,056 | | | | |
| | Independent | Joseph Murphy | 5.8 | 4,207 | 4,880 | 5,037 | 5,102 | 5,253 | 5,302 | 5,918 | 6,158 | 6,498 | 7,470 |
| | Independent | Patrick Belton | 5.4 | 3,922 | 3,970 | 4,032 | 4,052 | 4,369 | 4,580 | 5,446 | 5,841 | 6,071 | 6,239 |
| | Independent | John Good | 5.1 | 3,679 | 6,291 | 6,408 | 6,487 | 6,527 | 6,580 | 6,857 | 6,885 | 7,182 | 8,196 |
| | Labour | Thomas Johnson | 5.0 | 3,626 | 3,786 | 3,858 | 3,894 | 4,139 | 4,286 | | | | |
| | Fianna Fáil | Robert Brennan | 5.0 | 3,591 | 3,611 | 3,626 | 3,634 | 3,892 | | | | | |
| | Cumann na nGaedheal | Joseph O'Neill | 3.3 | 2,352 | 3,301 | 4,109 | 4,351 | 4,400 | 4,415 | 4,667 | 4,696 | | |
| | Irish Worker League | James Larkin Jnr | 2.9 | 2,126 | 2,163 | 2,184 | 2,193 | | | | | | |
| | Cumann na nGaedheal | Batt O'Connor | 2.9 | 2,057 | 4,973 | 6,018 | 6,750 | 6,805 | 6,821 | 7,242 | 7,284 | 10,637 | |
| Electorate: 100,840 Valid: 72,204 Quota: 8,023 Turnout: 71.6% ||||||||||||||

### 1927 by-election

A by-election was held on 14 August 1927 to fill the seat in the 4th Dáil which had been left vacant by the assassination on 10 July of the Minister for Justice, Cumann na nGaedheal TD Kevin O'Higgins. The election was won for Cumann na nGaedheal by Gearóid O'Sullivan, who won nearly 70% of the first-preference votes.
1927 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count |
| Party | Party | Candidate | FPv% | 1 |
| | Cumann na nGaedheal | Gearóid O'Sullivan | 69.6 | 39,966 |
| | Fianna Fáil | Robert Brennan | 28.1 | 16,126 |
| | Sinn Féin | Kathleen Lynn | 2.3 | 1,332 |
| Electorate: 110,840 Valid: 57,424 Quota: 28,713 Turnout: 51.8% |||||

### June 1927 general election

Full figures for counts 5 to 18 are not available. Eight candidates lost their deposits (Tench, Morris, Byrne, Brennan, Guinness, McCabe, Rooney and Lynn).
June 1927 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | 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 | 14 | 15 | 16 | 17 | 18 |
| | Cumann na nGaedheal | Kevin O'Higgins | 22.7 | 15,918 | | | | | | | | | | | | | | | | | |
| | Independent | Bryan Cooper | 13.4 | 9,378 | | | | | | | | | | | | | | | | | |
| | Fianna Fáil | Patrick Belton | 12.5 | 8,751 | | | | | | | | | | | | | | | | | |
| | Labour | Thomas Johnson | 6.1 | 4,257 | 4,539 | 4,613 | 4,633 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7,983 | | | |
| | Fianna Fáil | Seán MacEntee | 6.1 | 4,238 | 4,251 | 4,254 | 4,339 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9,370 |
| | Independent | John Good | 6.0 | 4,204 | 4,635 | 5,732 | 5,739 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8,152 | | | |
| | Cumann na nGaedheal | Desmond FitzGerald | 5.6 | 3,902 | 8,754 | | | | | | | | | | | | | | | | |
| | Labour | Patrick Curran | 4.2 | 2,926 | 2,973 | 3,000 | 3,033 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4,505 |
| | Labour | William Norton | 3.5 | 2,440 | 2,574 | 2,594 | 2,603 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Sinn Féin | Kathleen Lynn | 2.8 | 1,937 | 1,954 | 1,960 | 1,977 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | National League | Henry Harrison | 2.7 | 1,919 | 1,982 | 2,082 | 2,086 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Fianna Fáil | Seán Brady | 2.3 | 1,636 | 1,647 | 1,652 | 2,337 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | National League | John McCabe | 2.3 | 1,610 | 1,683 | 1,706 | 1,711 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Cumann na nGaedheal | Batt O'Connor | 2.3 | 1,602 | 3,070 | 3,134 | 3,136 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6,505 |
| | Independent | Mary Guinness | 2.0 | 1,413 | 1,556 | 1,675 | 1,684 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Cumann na nGaedheal | John Rooney | 1.8 | 1,263 | 1,801 | 1,826 | 1,833 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Fianna Fáil | Robert Brennan | 1.4 | 1,009 | 1,016 | 1,019 | 1,075 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Independent | Denis Byrne | 1.4 | 994 | 1,017 | 1,030 | 1,038 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | Fianna Fáil | James F. Morris | 0.5 | 378 | 382 | 383 | 396 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| | National League | Gerald Tench | 0.5 | 315 | 339 | 349 | 352 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Electorate: 110,480 Valid: 70,090 Quota: 7,788 Turnout: 63.2% ||||||||||||||||||||||

### 1926 by-election

A by-election was held on 18 February 1926 to fill the seat in the 4th Dáil which had been vacated by the death of the Independent TD Darrell Figgis. It was won by the Labour Party candidate William Norton. Norton's win was the first by a Labour Party candidate at any by-election since the establishment of the First Dáil. Labour would next win a seat from another party in a by-election 72 years later, when Seán Ryan won the Dublin North by-election in March 1998.
1926 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 |
| | Cumann na nGaedheal | Thomas Healy | 37.2 | 12,279 | 14,303 |
| | Labour | William Norton | 35.7 | 11,797 | 15,168 |
| | Independent | Patrick Belton | 27.2 | 8,974 | |
| Electorate: 98,187 Valid: 33,050 Quota: 16,526 Turnout: 33.7% ||||||

### 1924 by-election

A by-election was held on 19 March 1924 to fill the seat in the 4th Dáil which had been left vacant by the death of the Cumann na nGaedheal TD Michael Derham. It was won for Cumann na nGaedheal by Batt O'Connor.
1924 by-election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 |
| | Cumann na nGaedheal | Batt O'Connor | 39.0 | 16,456 | 18,353 | 24,491 |
| | Republican | Seán MacEntee | 24.3 | 10,263 | 11,760 | 12,679 |
| | Businessmen's Party | Matthew Good | 21.7 | 9,158 | 9,705 | |
| | Labour | Archie Heron | 14.9 | 6,287 | | |
| Electorate: 98,187 Valid: 42,164 Quota: 21,083 Turnout: 42.9% |||||||

### 1923 general election

1923 general election: Dublin County :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | 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 | 14 | 15 | 16 | 17 |
| | Cumann na nGaedheal | Kevin O'Higgins | 36.3 | 20,821 | | | | | | | | | | | | | | | | |
| | Independent | Bryan Cooper | 7.2 | 4,128 | 4,585 | 4,779 | 4,781 | 4,785 | 4,940 | 4,978 | 4,993 | 5,018 | 5,107 | 5,155 | 5,160 | 5,286 | 5,300 | 5,314 | 5,440 | 6,369 |
| | Labour | Thomas Johnson | 6.8 | 3,911 | 4,253 | 4,345 | 4,371 | 4,409 | 4,415 | 4,529 | 5,110 | 5,155 | 5,293 | 5,359 | 5,421 | 5,591 | 5,611 | 5,753 | 6,399 | |
| | Cumann na nGaedheal | Desmond FitzGerald | 6.3 | 3,615 | 12,180 | | | | | | | | | | | | | | | |
| | Businessmen's Party | John Good | 5.6 | 3,238 | 3,642 | 3,829 | 3,832 | 3,841 | 3,912 | 3,958 | 3,963 | 4,008 | 4,078 | 4,115 | 4,123 | 4,287 | 4,303 | 4,315 | 4,387 | 6,896 |
| | Republican | Kathleen Lynn | 5.3 | 3,064 | 3,085 | 3,086 | 3,180 | 3,183 | 3,190 | 3,241 | 3,304 | 3,318 | 3,357 | 3,372 | 4,267 | 4,313 | 4,316 | 7,532 | | |
| | Independent | Darrell Figgis | 5.1 | 2,923 | 3,563 | 3,952 | 3,955 | 3,972 | 4,030 | 4,296 | 4,353 | 4,442 | 4,633 | 4,752 | 4,779 | 5,151 | 5,214 | 5,271 | 5,455 | 5,673 |
| | Independent | David Barry | 4.4 | 2,539 | 2,913 | 3,086 | 3,088 | 3,096 | 3,416 | 3,441 | 3,447 | 3,480 | 3,533 | 3,559 | 3,567 | 3,820 | 3,852 | 3,863 | 3,943 | |
| | Republican | Seán MacEntee | 4.1 | 2,350 | 2,372 | 2,374 | 2,513 | 2,515 | 2,515 | 2,545 | 2,568 | 2,571 | 2,625 | 2,643 | 3,664 | 3,714 | 3,719 | | | |
| | Cumann na nGaedheal | Michael Derham | 3.5 | 1,986 | 2,731 | 4,836 | 4,843 | 5,033 | 5,058 | 5,118 | 5,172 | 5,329 | 5,464 | 5,978 | 6,001 | 6,646 | | | | |
| | Republican | Conn Murphy | 3.3 | 1,905 | 1,925 | 1,931 | 2,060 | 2,067 | 2,069 | 2,094 | 2,119 | 2,129 | 2,178 | 2,189 | | | | | | |
| | Farmers' Party | John Rooney | 2.7 | 1,530 | 1,768 | 1,826 | 1,848 | 1,852 | 1,858 | 1,880 | 1,894 | 2,331 | 2,430 | 2,526 | 2,557 | | | | | |
| | Independent | John P. McCabe | 1.4 | 815 | 1,020 | 1,087 | 1,093 | 1,104 | 1,116 | 1,158 | 1,198 | 1,225 | | | | | | | | |
| | Labour | Bernard Kavanagh | 1.4 | 810 | 898 | 924 | 933 | 939 | 944 | 990 | | | | | | | | | | |
| | Farmers' Party | John Fitzsimons | 1.2 | 676 | 1,019 | 1,072 | 1,076 | 1,085 | 1,096 | 1,118 | 1,128 | | | | | | | | | |
| | Independent | James Ashe | 1.2 | 663 | 708 | 728 | 728 | 728 | | | | | | | | | | | | |
| | Cumann na nGaedheal | Batt O'Connor | 1.2 | 658 | 1,517 | 2,920 | 2,924 | 3,187 | 3,198 | 3,239 | 3,265 | 3,368 | 3,452 | 4,485 | 4,530 | 4,745 | 4,864 | 4,948 | 4,998 | 5,057 |
| | Independent | George Gavan Duffy | 1.1 | 653 | 812 | 876 | 882 | 896 | 912 | | | | | | | | | | | |
| | Republican | Philip Ryan | 0.8 | 466 | 474 | 475 | | | | | | | | | | | | | | |
| | Cumann na nGaedheal | Michael W. O'Reilly | 0.8 | 459 | 1,233 | 1,801 | 1,811 | 1,894 | 1,898 | 1,922 | 1,947 | 2,021 | 2,125 | | | | | | | |
| | Cumann na nGaedheal | Seán B. Healy | 0.3 | 153 | 291 | 688 | 688 | | | | | | | | | | | | | |
| Electorate: 97,167 Valid: 57,363 Quota: 6,374 Turnout: 59.0% |||||||||||||||||||||

### 1922 general election

1922 general election: Dublin County :
| 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 |
| | Independent | Darrell Figgis | 29.0 | 15,087 | | | | | | | | |
| | Labour | Thomas Johnson | 15.9 | 8,220 | | | | | | | | |
| | Sinn Féin (Pro-Treaty) | George Gavan Duffy | 13.3 | 6,918 | 8,735 | | | | | | | |
| | Sinn Féin (Anti-Treaty) | Margaret Pearse | 9.3 | 4,826 | 4,859 | 4,940 | 4,964 | 5,093 | 5,297 | 5,393 | 5,529 | 5,579 |
| | Sinn Féin (Pro-Treaty) | Desmond FitzGerald | 8.3 | 4,308 | 5,413 | 5,686 | 6,255 | 6,544 | 8,069 | | | |
| | Farmers' Party | John Rooney | 7.1 | 3,697 | 6,183 | 6,233 | 6,476 | 6,622 | 6,874 | 6,953 | 9,662 | |
| | Sinn Féin (Pro-Treaty) | Michael Derham | 5.7 | 2,961 | 3,118 | 3,204 | 3,272 | 4,283 | 5,093 | 5,451 | 5,945 | 7,113 |
| | Sinn Féin (Pro-Treaty) | Séamus Dwyer | 5.0 | 2,603 | 2,986 | 3,067 | 3,164 | 3,256 | | | | |
| | Sinn Féin (Pro-Treaty) | Peter O'Kelly | 3.2 | 1,644 | 1,734 | 1,905 | 1,974 | | | | | |
| | Independent | John P. McCabe | 3.1 | 1,613 | 3,217 | 3,283 | 3,536 | 3,641 | 3,918 | 4,042 | | |
| Electorate: 79,174 Valid: 51,877 Quota: 7,412 Turnout: 65.5% |||||||||||||

### 1921 general election

In the 1921 general election to the 2nd Dáil, no constituencies were contested. As in other constituencies, all 6 candidates in County Dublin were returned unopposed.
1921 general election: Dublin County :
| Party | Candidate | FPv% | % | Seat |
| Sinn Féin | Michael Derham | Unopposed | N/A | 1 |
| Sinn Féin | George Gavan Duffy | Unopposed | N/A | 2 |
| Sinn Féin | Séamus Dwyer | Unopposed | N/A | 3 |
| Sinn Féin | Desmond FitzGerald | Unopposed | N/A | 4 |
| Sinn Féin | Frank Lawless | Unopposed | N/A | 5 |
| Sinn Féin | Margaret Pearse | Unopposed | N/A | 6 |