# Mayo South (Dáil constituency)

Mayo South was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1923 to 1969. The method of election was proportional representation by means of the single transferable vote (PR-STV).

## History

The constituency was created under the Electoral Act 1923 for the 1923 general election to Dáil Éireann, whose members formed the 4th Dáil.
From 1923 to 1948, Mayo South elected 5 deputies (Teachtaí Dála, commonly known as TDs). Under the Electoral (Amendment) Act 1947, this was reduced to 4 with effect from the 1948 general election.
It was abolished under the Electoral (Amendment) Act 1969, when it and Mayo North were replaced by the two new constituencies of Mayo East and Mayo West.

## Boundaries

The constituency covered the county electoral areas of Castlebar, Claremorris and Westport, in the administrative county of Mayo.

## TDs

Teachtaí Dála (TDs) for Mayo South 1923–1969 :
| Key to parties  CnaG = Cumann na nGaedheal  CnaT = Clann na Talmhan  FF = Fianna Fáil  FG = Fine Gael  Lab = Labour  Rep = Republican ||||||||||||
| Dáil | Election | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) |
| 4th | 1923 | | Tom Maguire (Rep) | | Michael Kilroy (Rep) | | William Sears (CnaG) | | Joseph MacBride (CnaG) | | Martin Nally (CnaG) |
| 5th | 1927 (Jun) | | Thomas J. O'Connell (Lab) | | Michael Kilroy (FF) | | Eugene Mullen (FF) | | James FitzGerald-Kenney (CnaG) | | Martin Nally (CnaG) |
| 6th | 1927 (Sep) | | Thomas J. O'Connell (Lab) | | Michael Kilroy (FF) | | Richard Walsh (FF) | | James FitzGerald-Kenney (CnaG) | | Martin Nally (CnaG) |
| 7th | 1932 | | Edward Moane (FF) | | Michael Kilroy (FF) | | Richard Walsh (FF) | | James FitzGerald-Kenney (CnaG) | | Martin Nally (CnaG) |
| 8th | 1933 | | Edward Moane (FF) | | Michael Kilroy (FF) | | Richard Walsh (FF) | | James FitzGerald-Kenney (CnaG) | | Martin Nally (CnaG) |
| 9th | 1937 | | Edward Moane (FF) | | Micheál Clery (FF) | | Richard Walsh (FF) | | James FitzGerald-Kenney (FG) | | Martin Nally (FG) |
| 10th | 1938 | | Mícheál Ó Móráin (FF) | | Micheál Clery (FF) | | Richard Walsh (FF) | | James FitzGerald-Kenney (FG) | | Martin Nally (FG) |
| 11th | 1943 | | Mícheál Ó Móráin (FF) | | Micheál Clery (FF) | | Joseph Blowick (CnaT) | | James FitzGerald-Kenney (FG) | | Dominick Cafferky (CnaT) |
| 12th | 1944 | | Mícheál Ó Móráin (FF) | | Micheál Clery (FF) | | Joseph Blowick (CnaT) | | Richard Walsh (FF) | | Dominick Cafferky (CnaT) |
| 12th | 1945 by-election | | Mícheál Ó Móráin (FF) | | Bernard Commons (CnaT) | | Joseph Blowick (CnaT) | | Richard Walsh (FF) | | Dominick Cafferky (CnaT) |
| 13th | 1948 | | Mícheál Ó Móráin (FF) | | Bernard Commons (CnaT) | | Joseph Blowick (CnaT) | | Richard Walsh (FF) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 14th | 1951 | | Mícheál Ó Móráin (FF) | | Seán Flanagan (FF) | | Joseph Blowick (CnaT) | | Dominick Cafferky (CnaT) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 15th | 1954 | | Mícheál Ó Móráin (FF) | | Seán Flanagan (FF) | | Joseph Blowick (CnaT) | | Henry Kenny (FG) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 16th | 1957 | | Mícheál Ó Móráin (FF) | | Seán Flanagan (FF) | | Joseph Blowick (CnaT) | | Henry Kenny (FG) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 17th | 1961 | | Mícheál Ó Móráin (FF) | | Seán Flanagan (FF) | | Joseph Blowick (CnaT) | | Henry Kenny (FG) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 18th | 1965 | | Mícheál Ó Móráin (FF) | | Seán Flanagan (FF) | | Michael Lyons (FG) | | Henry Kenny (FG) | 4 seats 1948–1969 | 4 seats 1948–1969 |
| 19th | 1969 | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West | Constituency abolished. See Mayo East and Mayo West |
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: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Mícheál Ó Móráin | 23.7 | 7,286 | | | | | |
| | Fine Gael | Henry Kenny | 23.0 | 7,071 | | | | | |
| | Fianna Fáil | Seán Flanagan | 15.6 | 4,799 | 5,510 | 5,546 | 6,811 | | |
| | Fine Gael | Michael Lyons | 13.9 | 4,265 | 4,295 | 4,831 | 5,018 | 5,111 | 5,679 |
| | Fine Gael | Martin Finn | 13.8 | 4,247 | 4,291 | 4,556 | 4,694 | 4,772 | 5,125 |
| | Clann na Poblachta | Oliver Morahan | 5.4 | 1,651 | 1,710 | 1,778 | 1,835 | 1,918 | |
| | Fianna Fáil | John J. Keane | 4.7 | 1,442 | 1,731 | 1,744 | | | |
| Electorate: 42,253 Valid: 30,761 Quota: 6,153 Turnout: 72.8% ||||||||||

### 1961 general election

1961 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fianna Fáil | Mícheál Ó Móráin | 23.1 | 6,965 | | | | | | |
| | Fine Gael | Henry Kenny | 20.6 | 6,215 | | | | | | |
| | Fianna Fáil | Seán Flanagan | 14.5 | 4,368 | 4,841 | 4,849 | 4,908 | 6,045 | | |
| | Clann na Talmhan | Joseph Blowick | 13.6 | 4,088 | 4,189 | 4,231 | 4,566 | 4,652 | 5,180 | 5,748 |
| | Fine Gael | Martin Finn | 8.0 | 2,409 | 2,426 | 2,476 | 2,534 | 2,651 | 3,016 | |
| | Fine Gael | Michael Lyons | 7.4 | 2,230 | 2,252 | 2,334 | 2,415 | 2,454 | 3,116 | 4,904 |
| | Independent | Dominick Cafferky | 6.4 | 1,941 | 1,961 | 1,968 | 1,991 | 2,033 | | |
| | Fianna Fáil | George McGuire | 4.1 | 1,236 | 1,530 | 1,533 | 1,576 | | | |
| | Clann na Talmhan | Thomas Thornton | 2.1 | 645 | 663 | 666 | | | | |
| Electorate: 44,841 Valid: 30,097 Quota: 6,020 Turnout: 67.1% |||||||||||

### 1957 general election

1957 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Clann na Talmhan | Joseph Blowick | 16.8 | 5,749 | 6,056 | 6,247 | 6,689 | 7,078 | |
| | Fianna Fáil | Mícheál Ó Móráin | 16.5 | 5,624 | 5,736 | 5,778 | 5,833 | 7,530 | |
| | Fianna Fáil | Seán Flanagan | 15.8 | 5,391 | 5,475 | 5,590 | 5,750 | 7,038 | |
| | Fine Gael | Henry Kenny | 12.9 | 4,411 | 4,587 | 5,922 | 6,265 | 6,490 | 6,603 |
| | Fianna Fáil | Patrick Duffy | 10.6 | 3,624 | 3,853 | 3,868 | 3,911 | | |
| | Clann na Talmhan | Dominick Cafferky | 9.7 | 3,311 | 3,405 | 4,016 | 5,445 | 5,563 | 5,636 |
| | Clann na Talmhan | Douglas Kelly | 7.4 | 2,525 | 2,541 | 2,613 | | | |
| | Fine Gael | Michael Lyons | 6.9 | 2,366 | 2,427 | | | | |
| | Clann na Poblachta | Oliver Morahan | 3.4 | 1,155 | | | | | |
| Electorate: 49,018 Valid: 34,156 Quota: 6,832 Turnout: 69.7% ||||||||||

### 1954 general election

1954 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| | Clann na Talmhan | Joseph Blowick | 17.3 | 6,338 | 6,463 | 6,602 | 7,923 | | | | |
| | Fianna Fáil | Seán Flanagan | 15.7 | 5,742 | 5,804 | 6,538 | 6,630 | 6,640 | 7,661 | | |
| | Fine Gael | Henry Kenny | 13.6 | 4,983 | 5,045 | 5,156 | 5,438 | 5,508 | 5,659 | 5,686 | 8,220 |
| | Fianna Fáil | Mícheál Ó Móráin | 11.5 | 4,204 | 4,250 | 5,164 | 5,204 | 5,216 | 7,139 | 7,430 | |
| | Fine Gael | Michael Lyons | 9.3 | 3,400 | 3,427 | 3,492 | 3,647 | 3,676 | 3,723 | 3,732 | |
| | Fianna Fáil | Patrick Duffy | 9.0 | 3,309 | 3,334 | 3,453 | 3,487 | 3,489 | | | |
| | Clann na Talmhan | Dominick Cafferky | 8.7 | 3,197 | 3,237 | 3,258 | 4,130 | 4,602 | 4,775 | 4,781 | 5,607 |
| | Clann na Talmhan | Bernard Commons | 7.3 | 2,669 | 2,824 | 2,882 | | | | | |
| | Fianna Fáil | Bernard Joyce | 6.0 | 2,190 | 2,215 | | | | | | |
| | Independent | Martin Carney | 1.6 | 603 | | | | | | | |
| Electorate: 50,516 Valid: 36,635 Quota: 7,328 Turnout: 72.5% ||||||||||||

### 1951 general election

1951 general election: Mayo South :
| 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 |
| | Clann na Talmhan | Joseph Blowick | 18.1 | 6,974 | 7,096 | 7,180 | 7,217 | 8,838 | | | | |
| | Clann na Talmhan | Dominick Cafferky | 15.5 | 5,947 | 5,959 | 5,972 | 6,282 | 7,804 | | | | |
| | Fianna Fáil | Mícheál Ó Móráin | 13.5 | 5,187 | 5,209 | 5,220 | 5,506 | 5,606 | 5,661 | 5,667 | 9,116 | |
| | Fianna Fáil | Patrick Gibbons | 12.4 | 4,756 | 4,771 | 4,815 | 4,961 | 5,029 | 5,042 | 5,044 | | |
| | Fine Gael | John T. Ruane | 10.6 | 4,085 | 4,383 | 4,824 | 4,917 | 5,271 | 6,229 | 6,332 | 6,587 | 6,666 |
| | Fianna Fáil | Seán Flanagan | 10.1 | 3,887 | 3,895 | 3,899 | 5,481 | 5,591 | 5,639 | 5,644 | 6,520 | 7,869 |
| | Clann na Talmhan | Bernard Commons | 9.8 | 3,751 | 3,784 | 3,791 | 3,888 | | | | | |
| | Fianna Fáil | Martin J. Cassidy | 7.1 | 2,713 | 2,715 | 2,717 | | | | | | |
| | Fine Gael | Patrick Shanley | 1.5 | 578 | 613 | | | | | | | |
| | Fine Gael | Patrick Gavin | 1.5 | 561 | | | | | | | | |
| Electorate: 52,366 Valid: 38,439 Quota: 7,688 Turnout: 73.40% |||||||||||||

### 1948 general election

1948 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| | Clann na Talmhan | Joseph Blowick | 13.0 | 5,052 | 5,067 | 5,336 | 5,358 | 5,970 | 6,311 | 6,332 | 7,198 |
| | Fianna Fáil | Richard Walsh | 11.8 | 4,594 | 4,621 | 4,662 | 7,135 | 7,269 | 8,528 | | |
| | Clann na Talmhan | Bernard Commons | 11.3 | 4,393 | 4,423 | 4,486 | 4,530 | 5,168 | 5,330 | 5,346 | 8,583 |
| | Clann na Talmhan | Dominick Cafferky | 10.8 | 4,193 | 4,361 | 4,390 | 4,511 | 4,683 | 4,738 | 4,744 | |
| | Fianna Fáil | Patrick Gibbons | 10.0 | 3,889 | 3,919 | 4,170 | 4,314 | 4,540 | | | |
| | Fianna Fáil | Mícheál Ó Móráin | 9.6 | 3,713 | 3,749 | 3,837 | 4,375 | 4,594 | 6,705 | 7,382 | 7,435 |
| | Fianna Fáil | Patrick Regan | 9.1 | 3,534 | 3,646 | 3,674 | | | | | |
| | Fine Gael | John T. Ruane | 8.7 | 3,379 | 4,179 | 4,287 | 4,410 | 4,912 | 5,068 | 5,098 | 5,303 |
| | Clann na Poblachta | John James Durcan | 5.9 | 2,307 | 2,574 | 3,897 | 3,933 | | | | |
| | Clann na Poblachta | Owen Hughes | 5.1 | 1,967 | 2,288 | | | | | | |
| | Fine Gael | John McCarthy | 2.5 | 983 | | | | | | | |
| | Clann na Poblachta | John Grealy | 2.3 | 883 | | | | | | | |
| Electorate: 55,555 Valid: 38,887 Quota: 7,778 Turnout: 70.00% ||||||||||||

### 1945 by-election

Following the resignation of Fianna Fáil TD Micheál Clery, a by-election was held on 4 December 1945. The seat was won by the Clann na Talmhan candidate Bernard Commons
1945 by-election: Mayo South :
| Party | Party | Candidate | FPv% | Count |
| Party | Party | Candidate | FPv% | 1 |
| | Clann na Talmhan | Bernard Commons | 53.3 | 16,977 |
| | Fianna Fáil | Charles Gilmartin | 46.7 | 14,861 |
| Electorate: 57,775 Valid: 31,838 Quota: 15,920 Turnout: 55.11% |||||

### 1944 general election

1944 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Micheál Clery | 17.4 | 6,814 | | | | | |
| | Clann na Talmhan | Dominick Cafferky | 14.7 | 5,743 | 5,757 | 6,131 | 6,177 | 8,287 | |
| | Fianna Fáil | Richard Walsh | 13.7 | 5,366 | 5,522 | 5,575 | 6,413 | 6,563 | |
| | Fianna Fáil | Mícheál Ó Móráin | 11.8 | 4,620 | 4,646 | 4,679 | 6,438 | 6,493 | 6,507 |
| | Clann na Talmhan | Joseph Blowick | 11.4 | 4,471 | 4,474 | 4,501 | 4,589 | 5,876 | 7,580 |
| | Clann na Talmhan | Bernard Commons | 9.7 | 3,789 | 3,797 | 3,829 | 3,868 | | |
| | Fine Gael | James FitzGerald-Kenney | 9.5 | 3,738 | 3,744 | 4,914 | 4,983 | 5,115 | 5,153 |
| | Fianna Fáil | Michael Kilroy | 7.2 | 2,825 | 2,888 | 2,923 | | | |
| | Fine Gael | John O'Connor | 4.6 | 1,819 | 1,826 | | | | |
| Electorate: 59,780 Valid: 39,185 Quota: 6,531 Turnout: 65.6% ||||||||||

### 1943 general election

1943 general election: Mayo South :
| 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 | Micheál Clery | 14.6 | 6,118 | 6,147 | 6,174 | 6,201 | 6,289 | 6,427 | 6,495 | 6,983 | | | |
| | Clann na Talmhan | Dominick Cafferky | 12.9 | 5,415 | 5,434 | 5,453 | 5,502 | 5,602 | 6,037 | 6,100 | 6,175 | 6,175 | 8,400 | |
| | Clann na Talmhan | Joseph Blowick | 11.9 | 4,992 | 4,999 | 5,058 | 5,168 | 5,272 | 5,328 | 5,761 | 5,969 | 5,970 | 7,188 | |
| | Fianna Fáil | Richard Walsh | 10.2 | 4,283 | 4,302 | 4,411 | 4,487 | 4,603 | 4,640 | 4,823 | 5,479 | 5,483 | 5,593 | 5,636 |
| | Clann na Talmhan | Bernard Commons | 8.8 | 3,695 | 3,721 | 3,756 | 3,786 | 4,054 | 4,078 | 4,135 | 4,177 | 4,177 | | |
| | Fianna Fáil | Mícheál Ó Móráin | 8.4 | 3,516 | 3,538 | 3,570 | 3,723 | 3,762 | 3,808 | 4,440 | 5,940 | 5,944 | 5,983 | 6,001 |
| | Fine Gael | James FitzGerald-Kenney | 7.3 | 3,052 | 3,062 | 3,118 | 3,194 | 4,137 | 5,213 | 5,433 | 5,633 | 5,633 | 5,936 | 6,054 |
| | Fianna Fáil | Michael Gallagher | 6.9 | 2,892 | 2,907 | 2,918 | 2,956 | 2,967 | 2,986 | 3,629 | | | | |
| | Independent | John Morahan | 5.5 | 2,307 | 2,311 | 2,326 | 2,550 | 2,572 | 2,624 | | | | | |
| | Fine Gael | William Gallagher | 4.6 | 1,925 | 1,943 | 1,947 | 1,985 | 2,073 | | | | | | |
| | Fine Gael | Martin Nally | 4.3 | 1,791 | 1,819 | 1,861 | 1,912 | | | | | | | |
| | Labour | James Quigley | 1.9 | 790 | 868 | 1,174 | | | | | | | | |
| | Labour | William Walsh (Ballinrobe) | 1.6 | 669 | 777 | | | | | | | | | |
| | Labour | William Walsh (Kiltimagh) | 1.0 | 398 | | | | | | | | | | |
| Electorate: 59,780 Valid: 41,843 Quota: 6,974 Turnout: 70.0% |||||||||||||||

### 1938 general election

1938 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fianna Fáil | Micheál Clery | 20.5 | 8,781 | | | | | | |
| | Fianna Fáil | Richard Walsh | 15.9 | 6,816 | 7,469 | | | | | |
| | Fine Gael | James FitzGerald-Kenney | 15.7 | 6,727 | 6,762 | 6,763 | 6,965 | 8,288 | | |
| | Fianna Fáil | Mícheál Ó Móráin | 12.6 | 5,395 | 5,600 | 5,697 | 5,952 | 6,029 | 6,072 | 6,097 |
| | Fine Gael | Martin Nally | 11.2 | 4,813 | 4,841 | 4,844 | 4,976 | 8,148 | | |
| | Fine Gael | William Gallagher | 11.2 | 4,779 | 4,812 | 4,814 | 4,882 | | | |
| | Fianna Fáil | Edward Moane | 10.8 | 4,617 | 5,285 | 5,509 | 5,660 | 5,734 | 5,791 | 5,823 |
| | Labour | James Quigley | 2.2 | 923 | 940 | 940 | | | | |
| Electorate: 59,800 Valid: 42,851 Quota: 7,142 Turnout: 71.7% |||||||||||

### 1937 general election

1937 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Fianna Fáil | Micheál Clery | 20.0 | 8,235 | | | | | | |
| | Fianna Fáil | Richard Walsh | 15.5 | 6,373 | 6,805 | 7,179 | | | | |
| | Fine Gael | James FitzGerald-Kenney | 14.5 | 5,951 | 5,983 | 6,389 | 6,404 | 6,637 | 6,695 | 7,644 |
| | Fine Gael | James Morrisroe | 9.7 | 3,988 | 3,999 | 4,073 | 4,076 | 4,141 | 4,169 | |
| | Fine Gael | Martin Nally | 9.5 | 3,906 | 3,925 | 4,276 | 4,298 | 4,363 | 4,402 | 6,966 |
| | Fine Gael | James McGing | 9.3 | 3,834 | 3,854 | 3,996 | 3,998 | 4,131 | 4,203 | 4,515 |
| | Fianna Fáil | Edward Moane | 9.0 | 3,684 | 4,288 | 4,538 | 4,641 | 7,182 | | |
| | Fianna Fáil | Mícheál Ó Móráin | 7.9 | 3,246 | 3,418 | 3,587 | 3,698 | | | |
| | Independent | Malachi Forde | 4.6 | 1,907 | 1,997 | | | | | |
| Electorate: 59,999 Valid: 41,124 Quota: 6,855 Turnout: 68.5% |||||||||||

### 1933 general election

1933 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Michael Kilroy | 17.2 | 7,033 | | | | |
| | Fianna Fáil | Richard Walsh | 15.6 | 6,410 | 6,422 | 6,447 | 6,566 | 6,608 |
| | Fianna Fáil | George Maguire | 14.2 | 5,805 | 5,887 | 5,946 | 6,010 | 6,044 |
| | Fianna Fáil | Edward Moane | 13.9 | 5,706 | 5,802 | 5,851 | 6,134 | 6,230 |
| | Cumann na nGaedheal | James FitzGerald-Kenney | 13.6 | 5,588 | 5,589 | 5,870 | 8,342 | |
| | Cumann na nGaedheal | Martin Nally | 12.0 | 4,926 | 4,927 | 5,234 | 6,841 | |
| | Cumann na nGaedheal | James McGing | 9.2 | 3,764 | 3,768 | 4,768 | | |
| | Cumann na nGaedheal | Patrick O'Donnell | 4.3 | 1,773 | 1,775 | | | |
| Electorate: 51,619 Valid: 41,005 Quota: 6,835 Turnout: 79.4% |||||||||

### 1932 general election

1932 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| | Cumann na nGaedheal | James FitzGerald-Kenney | 18.3 | 7,041 | | | | | | | |
| | Fianna Fáil | Richard Walsh | 18.0 | 6,945 | | | | | | | |
| | Fianna Fáil | Michael Kilroy | 14.5 | 5,589 | 5,610 | 5,739 | 6,105 | 7,628 | | | |
| | Fianna Fáil | Edward Moane | 12.2 | 4,711 | 4,731 | 4,844 | 5,007 | 5,912 | 7,003 | | |
| | Cumann na nGaedheal | Martin Nally | 8.9 | 3,414 | 3,704 | 3,717 | 4,073 | 4,271 | 4,291 | 4,308 | 6,952 |
| | Cumann na nGaedheal | Martin Moran | 8.0 | 3,094 | 3,305 | 3,314 | 3,727 | 3,797 | 3,828 | 3,849 | |
| | Labour | Thomas J. O'Connell | 8.0 | 3,085 | 3,105 | 3,132 | 3,447 | 3,719 | 3,785 | 4,134 | 4,666 |
| | Fianna Fáil | George Maguire | 7.4 | 2,839 | 2,850 | 3,063 | 3,178 | | | | |
| | Independent | Thomas Moclair | 4.7 | 1,796 | 1,844 | 1,865 | | | | | |
| Electorate: 50,843 Valid: 38,514 Quota: 6,420 Turnout: 75.8% ||||||||||||

### September 1927 general election

September 1927 general election: Mayo South :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Cumann na nGaedheal | James FitzGerald-Kenney | 16.5 | 5,650 | 5,698 | 5,701 | 5,787 |
| | Cumann na nGaedheal | Martin Nally | 15.3 | 5,241 | 5,297 | 5,300 | 5,503 |
| | Fianna Fáil | Richard Walsh | 14.5 | 4,978 | 5,987 | | |
| | Fianna Fáil | Michael Kilroy | 12.1 | 4,171 | 5,538 | 5,733 | |
| | Cumann na nGaedheal | Patrick O'Donnell | 11.8 | 4,058 | 4,095 | 4,097 | 4,245 |
| | Labour | Thomas J. O'Connell | 11.0 | 3,790 | 3,953 | 3,963 | 5,107 |
| | Fianna Fáil | Edward Moane | 9.7 | 3,344 | 3,707 | 3,758 | |
| | Fianna Fáil | Eugene Mullen | 9.0 | 3,104 | | | |
| Electorate: 52,989 Valid: 34,336 Quota: 5,723 Turnout: 64.8% ||||||||

### June 1927 general election

June 1927 general election: Mayo South :
| 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 | Thomas J. O'Connell | 12.1 | 4,144 | 4,228 | 4,325 | 4,617 | 4,779 | 5,296 | 5,944 | | | | |
| | Fianna Fáil | Michael Kilroy | 11.2 | 3,836 | 3,929 | 3,977 | 4,043 | 4,062 | 4,221 | 4,442 | 4,489 | 4,491 | 6,101 | |
| | Cumann na nGaedheal | Martin Nally | 10.0 | 3,429 | 3,587 | 3,722 | 3,924 | 4,763 | 5,066 | 5,649 | 5,726 | | | |
| | Fianna Fáil | Eugene Mullen | 9.6 | 3,282 | 3,322 | 3,355 | 3,406 | 3,440 | 3,792 | 3,884 | 3,902 | 3,905 | 4,393 | 4,735 |
| | Fianna Fáil | Richard Walsh | 9.6 | 3,268 | 3,313 | 3,367 | 3,379 | 3,412 | 3,556 | 3,609 | 3,618 | 3,621 | 4,431 | 4,496 |
| | Fianna Fáil | Edward Moane | 8.9 | 3,056 | 3,101 | 3,129 | 3,255 | 3,270 | 3,320 | 3,367 | 3,375 | 3,375 | | |
| | Cumann na nGaedheal | James FitzGerald-Kenney | 8.4 | 2,884 | 2,952 | 3,281 | 3,596 | 4,166 | 4,561 | 5,546 | 5,637 | 5,661 | 5,713 | |
| | Cumann na nGaedheal | Patrick O'Donnell | 6.8 | 2,336 | 2,344 | 2,424 | 2,805 | 3,015 | 3,286 | | | | | |
| | National League | Thomas Moclair | 6.6 | 2,260 | 2,296 | 2,517 | 2,639 | 2,712 | | | | | | |
| | Cumann na nGaedheal | Joseph MacBride | 5.2 | 1,769 | 1,828 | 1,910 | | | | | | | | |
| | Cumann na nGaedheal | William Sears | 5.1 | 1,728 | 1,772 | 1,927 | 2,114 | | | | | | | |
| | Farmers' Party | Peter Tuohy | 3.2 | 1,093 | 1,417 | | | | | | | | | |
| | Farmers' Party | Thomas Kelly | 3.1 | 1,075 | | | | | | | | | | |
| Electorate: 52,989 Valid: 34,160 Quota: 5,694 Turnout: 64.5% |||||||||||||||

### 1923 general election

1923 general election: Mayo South :
| 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 |
| | Cumann na nGaedheal | William Sears | 20.5 | 6,571 | | | | | | | | |
| | Republican | Tom Maguire | 17.8 | 5,712 | | | | | | | | |
| | Cumann na nGaedheal | Joseph MacBride | 14.8 | 4,758 | 5,117 | 5,124 | 5,417 | | | | | |
| | Republican | Michael Kilroy | 11.0 | 3,516 | 3,524 | 3,637 | 3,689 | 3,692 | 3,812 | 4,146 | 6,460 | |
| | Cumann na nGaedheal | Martin Nally | 10.8 | 3,468 | 3,932 | 3,941 | 4,140 | 4,169 | 4,322 | 4,650 | 4,690 | 4,737 |
| | Cumann na nGaedheal | Charles Bewley | 7.7 | 2,479 | 2,656 | 2,658 | 2,784 | 2,813 | 3,223 | 3,590 | 3,613 | 3,626 |
| | Republican | Thomas Derrig | 6.7 | 2,148 | 2,152 | 2,372 | 2,389 | 2,390 | 2,455 | 2,551 | | |
| | Labour | Michael O'Connor | 4.0 | 1,298 | 1,345 | 1,354 | 1,411 | 1,416 | 1,633 | | | |
| | Independent | P. J. O'Malley | 3.7 | 1,175 | 1,234 | 1,236 | 1,347 | 1,354 | | | | |
| | Farmers' Party | Peter Tuohy | 2.9 | 929 | 1,039 | 1,046 | | | | | | |
| Electorate: 58,513 Valid: 32,054 Quota: 5,343 Turnout: 54.8% |||||||||||||