Changes
| Date | Gain | Loss | Notes | ||
|---|---|---|---|---|---|
| 1928-12-06 6 December 1928 | Cumann na nGaedheal | Thomas Westropp Bennett elected as Cathaoirleach | |||
| 1929-03-23 23 March 1929 | Cumann na nGaedheal | Death of William Sears | |||
| 1929-04-10 10 April 1929 | Independent | Sir Nugent Everard elected at a by-election to replace William Sears | |||
| 1929-05-28 28 May 1929 | Independent | Death of Alice Stopford Green | |||
| 1929-06-05 5 June 1929 | Independent | Resignation of Henry Petty-Fitzmaurice, 6th Marquess of Lansdowne | |||
| 1929-06-20 20 June 1929 | Cumann na nGaedheal | Kathleen Browne elected at a by-election to replace Alice Stopford Green | |||
| 1929-06-20 20 June 1929 | Independent | Laurence O'Neill elected at a by-election to replace the Marquess of Lansdowne | |||
| 1929-07-12 12 July 1929 | Independent | Death of Sir Nugent Everard | |||
| 1929-10-23 23 October 1929 | Independent | Richard A. Butler elected at a by-election to replace Sir Nugent Everard | |||
| 1930-09-24 24 September 1930 | Independent | Death of Sir Bryan Mahon | |||
| 1930-12-12 12 December 1930 | Cumann na nGaedheal | Michael Staines elected at a by-election to replace Sir Bryan Mahon | |||
| 1931-04-22 22 April 1931 | Independent | Death of Patrick W. Kenny | |||
| 1931-05-28 28 May 1931 | Independent | Arthur Vincent elected at a by-election to replace Patrick W. Kenny | |||
| 1931-09-06 6 September 1931 | Independent | Death of Patrick Hooper | |||
| 1931-11-05 5 November 1931 | Cumann na nGaedheal | George Crosbie elected at a by-election to replace Patrick Hooper | |||
Read more about this topic: Members Of The 1928 Seanad