# Cavan (Dáil constituency)

Cavan was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1921 to 1977. The method of election was proportional representation by means of the single transferable vote (PR-STV).

## History

From 1921 to 1923, Cavan elected 3 deputies (Teachtaí Dála, commonly known as TDs). This was increased to 4 with effect from the 1923 general election, and reduced to 3 with effect from the 1961 general election to 1977.
At the 1977 general election, the Cavan constituency was combined with Monaghan to form the new 5 seat Cavan–Monaghan constituency.

## Boundaries

Throughout its existence, the constituency consisted of the entire administrative county of Cavan.

## TDs

Teachtaí Dála (TDs) for Cavan 1921–1977 :
| Key to parties  CnaP = Clann na Poblachta  CnaT = Clann na Talmhan  CnaG = Cumann na nGaedheal  FP = Farmers' Party  FF = Fianna Fáil  FG = Fine Gael  Ind = Independent  NCP = National Centre Party  Rep = Republican  SF = Sinn Féin  PT-SF = Sinn Féin (Pro-Treaty) ||||||||||
| Dáil | Election | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) | Deputy (Party) |
| 2nd | 1921 | | Arthur Griffith (SF) | | Paul Galligan (SF) | | Seán Milroy (SF) | 3 seats 1921–1923 | 3 seats 1921–1923 |
| 3rd | 1922 | | Arthur Griffith (PT-SF) | | Walter L. Cole (PT-SF) | | Seán Milroy (PT-SF) | 3 seats 1921–1923 | 3 seats 1921–1923 |
| 4th | 1923 | | Patrick Smith (Rep) | | John James Cole (Ind) | | Seán Milroy (CnaG) | | Patrick Baxter (FP) |
| 4th | 1925 by-election | | Patrick Smith (Rep) | | John James Cole (Ind) | | John Joe O'Reilly (CnaG) | | Patrick Baxter (FP) |
| 5th | 1927 (Jun) | | Paddy Smith (FF) | | John O'Hanlon (Ind) | | John Joe O'Reilly (CnaG) | | Patrick Baxter (FP) |
| 6th | 1927 (Sep) | | Paddy Smith (FF) | | John O'Hanlon (Ind) | | John Joe O'Reilly (CnaG) | | John James Cole (Ind) |
| 7th | 1932 | | Paddy Smith (FF) | | John O'Hanlon (Ind) | | John Joe O'Reilly (CnaG) | | Michael Sheridan (FF) |
| 8th | 1933 | | Paddy Smith (FF) | | Patrick McGovern (NCP) | | John Joe O'Reilly (CnaG) | | Michael Sheridan (FF) |
| 9th | 1937 | | Paddy Smith (FF) | | Patrick McGovern (FG) | | John James Cole (Ind) | | Michael Sheridan (FF) |
| 10th | 1938 | | Paddy Smith (FF) | | Patrick McGovern (FG) | | John James Cole (Ind) | | Michael Sheridan (FF) |
| 11th | 1943 | | Paddy Smith (FF) | | Patrick O'Reilly (CnaT) | | John James Cole (Ind) | | Michael Sheridan (FF) |
| 12th | 1944 | | Paddy Smith (FF) | | Patrick O'Reilly (CnaT) | | Tom O'Reilly (Ind) | | Michael Sheridan (FF) |
| 13th | 1948 | | Paddy Smith (FF) | | John Tully (CnaP) | | Patrick O'Reilly (Ind) | | Michael Sheridan (FF) |
| 14th | 1951 | | Paddy Smith (FF) | | John Tully (CnaP) | | Patrick O'Reilly (FG) | | Michael Sheridan (FF) |
| 15th | 1954 | | Paddy Smith (FF) | | John Tully (CnaP) | | Patrick O'Reilly (FG) | | Michael Sheridan (FF) |
| 16th | 1957 | | Paddy Smith (FF) | | John Tully (CnaP) | | Patrick O'Reilly (FG) | | Michael Sheridan (FF) |
| 17th | 1961 | | Paddy Smith (FF) | | Séamus Dolan (FF) | | Patrick O'Reilly (FG) | 3 seats 1961–1977 | 3 seats 1961–1977 |
| 18th | 1965 | | Paddy Smith (FF) | | John Tully (CnaP) | | Tom Fitzpatrick (FG) | 3 seats 1961–1977 | 3 seats 1961–1977 |
| 19th | 1969 | | Paddy Smith (FF) | | Patrick O'Reilly (FG) | | Tom Fitzpatrick (FG) | 3 seats 1961–1977 | 3 seats 1961–1977 |
| 20th | 1973 | | Paddy Smith (FF) | | John Wilson (FF) | | Tom Fitzpatrick (FG) | 3 seats 1961–1977 | 3 seats 1961–1977 |
| 21st | 1977 | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan | Constituency abolished. See Cavan–Monaghan |
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
### 1973 general election

1973 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fine Gael | Thomas J. Fitzpatrick | 28.1 | 7,276 | | | | |
| | Fianna Fáil | Patrick Smith | 23.1 | 5,979 | 6,292 | 6,685 | 8,657 | |
| | Fianna Fáil | John Wilson | 14.9 | 3,846 | 4,073 | 4,173 | 5,233 | 6,672 |
| | Fine Gael | Patrick O'Reilly | 13.4 | 3,459 | 4,114 | 6,047 | 6,323 | 6,369 |
| | Fianna Fáil | Séamus Dolan | 12.5 | 3,231 | 3,428 | 3,770 | | |
| | Fine Gael | David Coleman | 9.8 | 2,828 | 3,162 | | | |
| | Aontacht Éireann | James Kelly | 8.0 | 2,068 | | | | |
| Electorate: 37,299 Valid: 28,687 Quota: 7,172 Turnout: 76.9% |||||||||

### 1969 general election

1969 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fine Gael | Thomas J. Fitzpatrick | 23.8 | 7,092 | 7,329 | 8,631 | | | |
| | Fianna Fáil | Patrick Smith | 21.4 | 6,380 | 6,549 | 6,625 | 6,671 | 7,495 | |
| | Fianna Fáil | Séamus Dolan | 11.9 | 3,563 | 3,734 | 3,778 | 3,791 | 4,986 | 5,902 |
| | Fine Gael | Patrick O'Reilly | 11.9 | 3,548 | 3,842 | 4,188 | 5,193 | 5,335 | 6,910 |
| | Independent | John Tully | 10.4 | 3,123 | 3,581 | 3,647 | 3,702 | 3,950 | |
| | Fianna Fáil | Richard Black | 7.4 | 2,212 | 2,329 | 2,683 | 2,729 | | |
| | Fine Gael | Thomas Anderson | 7.3 | 2,194 | 2,266 | | | | |
| | Labour | James Caffrey | 4.2 | 1,255 | | | | | |
| | Labour | Thomas O'Connor | 1.7 | 495 | | | | | |
| Electorate: 37,331 Valid: 29,862 Quota: 7,466 Turnout: 80.0% ||||||||||

### 1965 general election

1965 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Smith | 24.7 | 6,758 | 6,875 | | | |
| | Fine Gael | Thomas J. Fitzpatrick | 19.7 | 5,408 | 5,528 | 9,363 | | |
| | Fianna Fáil | Séamus Dolan | 18.8 | 5,145 | 5,237 | 5,382 | 5,393 | 5,641 |
| | Fine Gael | Patrick O'Reilly | 16.9 | 4,643 | 4,735 | | | |
| | Clann na Poblachta | John Tully | 16.3 | 4,476 | 5,006 | 5,550 | 5,561 | 7,823 |
| | Labour | John O'Rourke | 3.6 | 981 | | | | |
| Electorate: 34,709 Valid: 27,411 Quota: 6,853 Turnout: 79.0% |||||||||

### 1961 general election

1961 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Fianna Fáil | Patrick Smith | 32.5 | 9,032 | | | |
| | Fine Gael | Patrick O'Reilly | 19.5 | 5,431 | 5,619 | 6,969 | |
| | Clann na Poblachta | John Tully | 16.8 | 4,683 | 4,937 | 5,125 | 6,482 |
| | Fianna Fáil | Séamus Dolan | 16.7 | 4,658 | 6,166 | 6,294 | 6,743 |
| | Sinn Féin | Patrick Duffy | 7.7 | 2,153 | 2,219 | 2,405 | |
| | Fine Gael | John McGovern | 6.7 | 1,862 | 1,923 | | |
| Electorate: 35,933 Valid: 27,819 Quota: 6,955 Turnout: 77.4% ||||||||

### 1957 general election

1957 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Smith | 23.9 | 7,309 | | | | |
| | Fine Gael | Patrick O'Reilly | 15.4 | 4,704 | 4,751 | 5,860 | 5,965 | 6,416 |
| | Clann na Poblachta | John Tully | 14.2 | 4,327 | 4,414 | 4,524 | 4,694 | 6,397 |
| | Independent | John James Cole | 13.6 | 4,161 | 4,184 | 4,217 | 4,267 | 4,366 |
| | Sinn Féin | Pádraig Ó Dubhthaigh | 10.8 | 3,308 | 3,345 | 3,494 | 3,742 | |
| | Fianna Fáil | Séamus Dolan | 8.6 | 2,626 | 2,794 | 2,853 | | |
| | Fianna Fáil | Michael Sheridan | 8.5 | 2,610 | 3,428 | 3,491 | 5,703 | 6,642 |
| | Fine Gael | John McGovern | 5.0 | 1,533 | 1,546 | | | |
| Electorate: 39,142 Valid: 30,578 Quota: 6,116 Turnout: 78.1% |||||||||

### 1954 general election

1954 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Patrick Smith | 22.8 | 7,570 | | | | | |
| | Clann na Poblachta | John Tully | 17.8 | 5,898 | 5,965 | 6,212 | 6,407 | 7,657 | |
| | Independent | John James Cole | 14.2 | 4,704 | 4,724 | 4,748 | 4,798 | 5,251 | 5,591 |
| | Fine Gael | Patrick O'Reilly | 12.9 | 4,280 | 4,310 | 5,107 | 5,171 | 6,408 | 6,823 |
| | Independent | Patrick O'Reilly | 10.8 | 3,597 | 3,635 | 3,930 | 4,154 | | |
| | Fianna Fáil | Séamus Dolan | 8.4 | 2,773 | 2,893 | 2,992 | | | |
| | Fianna Fáil | Michael Sheridan | 8.3 | 2,759 | 3,410 | 3,522 | 5,906 | 6,860 | |
| | Fine Gael | John McGovern | 4.8 | 1,596 | 1,604 | | | | |
| Electorate: 40,301 Valid: 33,177 Quota: 6,636 Turnout: 82.3% ||||||||||

### 1951 general election

1951 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Smith | 23.9 | 8,172 | | | | |
| | Clann na Poblachta | John Tully | 18.7 | 6,413 | 6,486 | 6,761 | 7,791 | |
| | Independent | Jack Cole | 14.5 | 4,981 | 5,002 | 5,060 | 5,401 | 5,641 |
| | Fine Gael | Patrick O'Reilly | 14.3 | 4,911 | 4,953 | 5,099 | 6,371 | 6,747 |
| | Fianna Fáil | Michael Sheridan | 10.4 | 3,564 | 4,493 | 6,667 | 7,538 | |
| | Independent | Patrick O'Reilly | 10.0 | 3,438 | 3,486 | 3,744 | | |
| | Fianna Fáil | Gerald M. Lovett | 6.7 | 2,287 | 2,477 | | | |
| | Independent | Eric D. O'Gowan | 1.4 | 495 | 511 | | | |
| Electorate: 42,098 Valid: 34,261 Quota: 6,853 Turnout: 81.38% |||||||||

### 1948 general election

1948 general election: Cavan :
| 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 Smith | 32.2 | 11,168 | | | | | | |
| | Independent | Patrick O'Reilly | 14.8 | 5,139 | 5,500 | 5,557 | 5,760 | 6,104 | 7,347 | |
| | Independent | John James Cole | 14.4 | 4,982 | 5,101 | 5,185 | 5,222 | 5,289 | 5,464 | 5,656 |
| | Fianna Fáil | Michael Sheridan | 9.3 | 3,221 | 6,176 | 6,455 | 8,010 | | | |
| | Clann na Poblachta | John Tully | 8.6 | 2,970 | 3,088 | 3,559 | 3,679 | 3,811 | 4,181 | 6,670 |
| | Clann na Poblachta | Peter A. Donohoe | 6.5 | 2,253 | 2,370 | 2,496 | 2,605 | 2,679 | 3,220 | |
| | Fine Gael | Tom O'Reilly | 6.0 | 2,081 | 2,220 | 2,307 | 2,401 | 2,558 | | |
| | Fianna Fáil | Francis Dolphin | 5.2 | 1,794 | 2,098 | 2,179 | | | | |
| | Labour | Edward Thornton | 3.2 | 1,119 | 1,228 | | | | | |
| Electorate: 44,068 Valid: 34,727 Quota: 6,946 Turnout: 78.80% |||||||||||

### 1944 general election

1944 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Fianna Fáil | Patrick Smith | 31.7 | 10,609 | | | |
| | Clann na Talmhan | Patrick O'Reilly | 17.3 | 5,794 | 6,101 | 6,589 | 6,750 |
| | Independent | John James Cole | 16.9 | 5,634 | 5,721 | 5,794 | 5,821 |
| | Independent | Tom O'Reilly | 15.0 | 5,000 | 5,428 | 6,134 | 6,418 |
| | Fianna Fáil | Michael Sheridan | 12.8 | 4,286 | 7,156 | | |
| | Fianna Fáil | Bernard Fay | 6.3 | 2,095 | 2,328 | | |
| Electorate: 46,501 Valid: 33,418 Quota: 6,684 Turnout: 71.7% ||||||||

### 1943 general election

1943 general election: Cavan :
| 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 | Patrick Smith | 25.9 | 9,279 | | | | | | | | |
| | Clann na Talmhan | Patrick O'Reilly | 15.0 | 5,397 | 5,597 | 5,641 | 5,829 | 6,309 | 6,651 | 7,088 | 7,740 | |
| | Independent | John James Cole | 14.8 | 5,307 | 5,363 | 5,402 | 5,656 | 5,780 | 5,918 | 6,165 | 6,423 | 7,005 |
| | Fianna Fáil | Michael Sheridan | 8.4 | 3,023 | 4,420 | 4,475 | 4,551 | 4,970 | 5,879 | 6,012 | 6,507 | 6,988 |
| | Independent | James Keogan | 5.5 | 1,968 | 2,020 | 2,077 | 2,116 | 2,241 | 2,334 | 2,412 | | |
| | Fine Gael | Patrick McGovern | 5.5 | 1,962 | 1,995 | 2,056 | 2,566 | 2,691 | 2,874 | 3,540 | 3,717 | 4,160 |
| | Independent | Hugh O'Donoghue | 4.7 | 1,671 | 1,751 | 1,787 | 1,832 | | | | | |
| | Fianna Fáil | James O'Reilly | 4.6 | 1,664 | 1,762 | 1,815 | 1,885 | 1,992 | | | | |
| | Labour | Michael Keating | 4.4 | 1,570 | 1,603 | 2,181 | 2,252 | 2,436 | 2,492 | 2,747 | 3,025 | |
| | Fine Gael | Patrick Farrell | 4.3 | 1,550 | 1,646 | 1,667 | 1,946 | 2,035 | 2,135 | | | |
| | Fine Gael | Patrick Baxter | 4.2 | 1,504 | 1,531 | 1,579 | | | | | | |
| | Labour | Michael Magee | 2.8 | 988 | 1,018 | | | | | | | |
| Electorate: 46,501 Valid: 35,883 Quota: 7,177 Turnout: 77.2% |||||||||||||

### 1938 general election

1938 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Fianna Fáil | Patrick Smith | 25.5 | 9,129 | | | |
| | Fianna Fáil | Michael Sheridan | 22.5 | 8,049 | | | |
| | Independent | John James Cole | 17.8 | 6,375 | 6,771 | 6,949 | 7,949 |
| | Fine Gael | Patrick McGovern | 17.5 | 6,261 | 6,951 | 7,254 | |
| | Labour | Michael Keating | 8.6 | 3,096 | 3,815 | 4,153 | 5,146 |
| | Fine Gael | John McGorry | 8.2 | 2,941 | 3,094 | 3,153 | |
| Electorate: 46,519 Valid: 35,851 Quota: 7,171 Turnout: 77.1% ||||||||

### 1937 general election

1937 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Fianna Fáil | Patrick Smith | 23.1 | 8,446 | | | | | |
| | Independent | John James Cole | 17.6 | 6,458 | 6,469 | 6,559 | 6,790 | 6,871 | 6,959 |
| | Fine Gael | Patrick McGovern | 16.0 | 5,868 | 5,884 | 6,062 | 6,921 | 7,176 | 7,410 |
| | Fine Gael | John Joe O'Reilly | 12.4 | 4,530 | 4,554 | 4,846 | 5,290 | 5,412 | 5,618 |
| | Fianna Fáil | Michael Sheridan | 10.8 | 3,943 | 4,838 | 5,797 | 5,996 | 9,122 | |
| | Fianna Fáil | Bernard Fay | 9.4 | 3,439 | 3,510 | 3,688 | 3,839 | | |
| | Independent | Patrick Farrell | 5.5 | 2,009 | 2,039 | 2,160 | | | |
| | Independent | James Smith | 5.3 | 1,946 | 2,017 | | | | |
| Electorate: 47,008 Valid: 36,639 Quota: 7,328 Turnout: 77.9% ||||||||||

### 1933 general election

1933 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 |
| | Fianna Fáil | Patrick Smith | 24.5 | 9,446 | | | | |
| | Fianna Fáil | Michael Sheridan | 22.7 | 8,740 | | | | |
| | Independent | John James Cole | 17.3 | 6,675 | 6,771 | 6,814 | 6,897 | 7,051 |
| | Cumann na nGaedheal | John Joe O'Reilly | 12.9 | 4,966 | 5,448 | 5,672 | 6,674 | 7,806 |
| | National Centre Party | John O'Hanlon | 11.8 | 4,560 | 4,982 | 5,282 | | |
| | National Centre Party | Patrick McGovern | 10.7 | 4,103 | 4,850 | 5,324 | 8,985 | |
| Electorate: 47,304 Valid: 38,490 Quota: 7,699 Turnout: 81.4% |||||||||

### 1932 general election

1932 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Fianna Fáil | Michael Sheridan | 22.5 | 8,183 | | | |
| | Independent | John O'Hanlon | 20.0 | 7,281 | 7,303 | | |
| | Fianna Fáil | Patrick Smith | 19.6 | 7,154 | 8,012 | | |
| | Independent | John James Cole | 16.7 | 6,083 | 6,085 | 6,375 | 6,398 |
| | Cumann na nGaedheal | John Joe O'Reilly | 13.8 | 5,023 | 5,034 | 7,048 | 7,159 |
| | Cumann na nGaedheal | Patrick Baxter | 7.4 | 2,697 | 2,702 | | |
| Electorate: 47,302 Valid: 36,421 Quota: 7,285 Turnout: 77.0% ||||||||

### September 1927 general election

September 1927 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 |
| | Cumann na nGaedheal | John Joe O'Reilly | 19.1 | 6,652 | 7,858 | | |
| | Fianna Fáil | Patrick Smith | 18.7 | 6,496 | 6,732 | 6,985 | |
| | Independent | John O'Hanlon | 17.7 | 6,154 | 8,338 | | |
| | Independent | John James Cole | 17.6 | 6,136 | 6,433 | 6,631 | 6,795 |
| | Fianna Fáil | Michael Sheridan | 14.0 | 4,862 | 5,225 | 5,767 | 6,067 |
| | Farmers' Party | Patrick Baxter | 12.9 | 4,484 | | | |
| Electorate: 54,955 Valid: 34,784 Quota: 6,957 Turnout: 63.3% ||||||||

### June 1927 general election

June 1927 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 |
| | Independent | John O'Hanlon | 32.7 | 11,152 | | | | | |
| | Cumann na nGaedheal | John Joe O'Reilly | 16.7 | 5,690 | 6,947 | | | | |
| | Fianna Fáil | Patrick Smith | 15.8 | 5,396 | 5,876 | 5,946 | 5,961 | 8,955 | |
| | Independent | John James Cole | 15.1 | 5,158 | 5,336 | 5,376 | 5,390 | 5,408 | 5,470 |
| | Farmers' Party | Patrick Baxter | 9.7 | 3,313 | 5,081 | 5,311 | 5,373 | 5,488 | 6,179 |
| | Fianna Fáil | Michael Sheridan | 8.3 | 2,830 | 3,260 | 3,375 | 3,400 | | |
| | Independent | Seán Milroy | 1.8 | 614 | 822 | | | | |
| Electorate: 54,955 Valid: 34,153 Quota: 6,831 Turnout: 62.2% ||||||||||

### 1925 by-election

Following the resignation of Cumann na nGaedheal TD Seán Milroy, a by-election was held on 11 March 1925. The seat was won by the Cumann na nGaedheal candidate John Joe O'Reilly.
1925 by-election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 |
| | Cumann na nGaedheal | John Joe O'Reilly | 38.5 | 12,560 | 12,980 |
| | Farmers' Party | John O'Hanlon | 31.5 | 10,285 | 12,119 |
| | Republican | Philip Baxter | 30.0 | 9,774 | |
| Electorate: 54,419 Valid: 32,619 Quota: 16,310 Turnout: 59.9% ||||||

### 1923 general election

1923 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count | Count | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | Farmers' Party | Patrick Baxter | 18.8 | 6,264 | 6,488 | 6,928 | | | | |
| | Republican | Patrick Smith | 18.4 | 6,112 | 6,155 | 6,213 | 6,283 | 6,358 | 6,429 | 6,519 |
| | Independent | John James Cole | 16.5 | 5,476 | 5,483 | 5,508 | 5,528 | 5,609 | 5,691 | 5,798 |
| | Cumann na nGaedheal | Seán Milroy | 15.4 | 5,109 | 5,134 | 5,205 | 5,251 | 5,578 | 6,680 | |
| | Labour | Patrick Sheridan | 11.3 | 3,749 | 3,779 | 3,847 | 3,873 | 3,930 | 4,195 | 4,628 |
| | Cumann na nGaedheal | Walter L. Cole | 7.4 | 2,448 | 2,463 | 2,491 | 2,515 | 2,606 | 3,093 | |
| | Cumann na nGaedheal | Thomas McKenna | 6.0 | 2,010 | 2,133 | 2,166 | 2,215 | 2,323 | | |
| | Independent | Patrick McQuaid | 2.4 | 810 | 838 | 861 | 870 | | | |
| | Farmers' Party | Henry O'Reilly | 2.2 | 728 | 774 | | | | | |
| | Farmers' Party | Patrick Farrelly | 1.7 | 559 | | | | | | |
| Electorate: 55,104 Valid: 33,265 Quota: 6,654 Turnout: 60.4% |||||||||||

### 1922 general election

1922 general election: Cavan :
| Party | Party | Candidate | FPv% | Count | Count | Count |
| Party | Party | Candidate | FPv% | 1 | 2 | 3 |
| | Sinn Féin (Pro-Treaty) | Arthur Griffith | 54.4 | 13,101 | | |
| | Farmers' Party | Patrick Baxter | 23.3 | 5,620 | 5,994 | 6,015 |
| | Sinn Féin (Pro-Treaty) | Walter L. Cole | 20.0 | 4,807 | 6,490 | |
| | Sinn Féin (Pro-Treaty) | Seán Milroy | 2.3 | 565 | 5,585 | 6,030 |
| Electorate: 44,022 Valid: 24,093 Quota: 6,024 Turnout: 54.7% |||||||

### 1921 general election

1921 general election: Cavan :
| Party | Candidate | FPv% | % | Seat |
| Sinn Féin | Paul Galligan | Unopposed | N/A | 1 |
| Sinn Féin | Arthur Griffith | Unopposed | N/A | 2 |
| Sinn Féin | Seán Milroy | Unopposed | N/A | 3 |