# By-elections to the House of Lords

By-elections to the House of Lords occur when vacancies arise among seats assigned to hereditary peers due to death, resignation, or disqualification. Candidates for these by-elections are limited to holders of hereditary peerages, and their electorates are made up of sitting Lords; in most cases the electorate are those sitting hereditary peers of the same party affiliation as the departed peer.

## Overview

Following the enactment of the House of Lords Act 1999, the number of hereditary peers entitled to sit in the House of Lords was reduced to ninety-two. The Earl Marshal and the Lord Great Chamberlain were entitled to sit ex officio; the remaining ninety were elected by all the hereditary peers before the passing of the reform.
Before the passing of the 1999 Act, the Lords approved a Standing Order stating that the remaining hereditary peers shall consist of:
* 2 peers to be elected by the Labour hereditary peers
* 42 peers to be elected by the Conservative hereditary peers
* 3 peers to be elected by the Liberal Democrat hereditary peers
* 28 peers to be elected by the Crossbench hereditary peers
* 15 peers to be elected by the whole House
** By convention, whole-House elections elect members of the same affiliation as the departed peer. In some such elections there have been unsuccessful candidates of different affiliation.
* The holders of the offices of Earl Marshal and Lord Great Chamberlain to be ex officio members. The current holder of the office of Lord Great Chamberlain was previously elected to the House of Lords in a by-election.
Prior to November 2002, vacancies were automatically filled by the highest performing unsuccessful candidate in the 1999 House of Lords election that elected the departed peer.
Elections are normally required to be held within three months of a vacancy occurring, but from 25 July 2024 to 24 January 2026, elections must be held within eighteen months—in practice suspending by-elections whilst the role of hereditary peers in the Lords is debated (see House of Lords (Hereditary Peers) Bill).
The elections take place under the Alternative Vote system for elections to individual vacancies and the Single Transferrable Vote for elections to fill multiple vacancies. All those on the Register of Hereditary Peers are eligible to stand, but only sitting (the "excepted") hereditary peers of the group in question may vote for the seats reserved for a single parliamentary group. This can result in very small electorates, such as only three voters in the 2003 election of Lord Grantchester. For the 15 peers elected by the whole House, life peers may also vote.
As of September 2023, there have been 18 by-elections among Conservative peers; 19 by-elections among Crossbench peers; 2 among Liberal Democrat peers; and 2 among Labour peers. In addition, there have been 14 by-elections by the whole House.

## By-election results
### 2003
#### After the death of the Viscount of Oxfuird

Hereditary peers' by-election (whole House eligible to vote), March 2003 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 | Count 16 | Count 17 | Count 18 |
| | Conservative | YViscount Ullswater | 86 | 89 | 89 | 91 | 91 | 94 | 95 | 101 | 103 | 109 | 111 | 114 | 116 | 123 | 123 | 127 | 144 | 151 |
| | Crossbench | Viscount Montgomery of Alamein | 46 | 46 | 46 | 46 | 48 | 49 | 49 | 53 | 54 | 56 | 56 | 61 | 63 | 66 | 68 | 80 | 95 | 116 |
| | Labour | Lord Grantchester | 57 | 58 | 59 | 59 | 59 | 59 | 59 | 59 | 60 | 60 | 61 | 62 | 64 | 65 | 83 | 92 | 93 | - |
| | Conservative | Viscount Eccles | 31 | 32 | 33 | 34 | 35 | 37 | 37 | 41 | 43 | 44 | 46 | 47 | 48 | 53 | 53 | 55 | - | - |
| | Crossbench | Lord Meston | 39 | 40 | 40 | 42 | 42 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 48 | 48 | 48 | - | - | - |
| | Labour | Lord Monkswell | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 31 | 31 | - | - | - | - |
| | Crossbench | Earl of Clancarty | 10 | 12 | 12 | 12 | 12 | 13 | 14 | 16 | 17 | 17 | 17 | - | - | - | - | - | - | - |
| | Crossbench | Lord Rathcavan | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | - | - | - | - | - | - | - |
| | Conservative | Viscount Trenchard | 10 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Weir | 10 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | - | - | - | - | - | - | - | - |
| | Conservative | Earl Cathcart | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 12 | 12 | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Norrie | 8 | 8 | 8 | 10 | 10 | 11 | 11 | 11 | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Brentford | 8 | 8 | 8 | 9 | 9 | 9 | 9 | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Cranbrook | 5 | 7 | 7 | 8 | 8 | 9 | 9 | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Stockton | 6 | 6 | 7 | 8 | 9 | 9 | 9 | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Effingham | 6 | 6 | 6 | 6 | 6 | 6 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Iveagh | 5 | 5 | 5 | 5 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord de Ramsey | 4 | 4 | 5 | 5 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Liberal Democrats | Earl of Carlisle | 3 | 4 | 4 | 5 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl Cairns | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Addison | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Birdwood | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Liberal Democrats | Earl of Glasgow | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Vaux of Harrowden | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Kinnoull | 2 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord de Mauley | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Gray | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Hood | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Independent | Lord Kennet | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Torrington | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Teynham | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Swinton | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Strathcarron | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Rowallan | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Poole | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Pender | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Napier of Magdala | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Morris | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Lawrence | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Kintore | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Gladwyn | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Cromer | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Birkett | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Independent | Lord Ashbourne | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Others | 37 others | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 661 Valid: 423 Spoilt: 3 Quota: 212 Turnout: 426 ||||||||||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Viscount Clancarty, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Cadman, Lord Calverley, Lord Carew, Lord Chesham, Lord Clifford of Chudleigh, Earl Cowley, Lord Cromwell, Earl of Drogheda (eligible to stand by virtue of his junior title, Baron Moore, as his senior title is in the Peerage of Ireland), Earl of Enniskillen (eligible to stand by virtue of his junior title, Baron Grinstead, as his senior title is in the Peerage of Ireland), Viscount Gage (eligible to stand by virtue of his junior title, Baron Gage, as his senior title is in the Peerage of Ireland), Lord Gainford, Lord Glanusk, Lord Herbert, Lord Hindlip, Lord HolmPatrick, Lord Kenilworth, Lord Killearn, Earl of Kimberley, Earl of Lauderdale, Viscount Leathers, Lord Macpherson of Drumochter, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Melville, Lord Milford, Lord Milverton, Lord Monk Bretton, Lord Newall, Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Lord Renwick, Viscount Samuel, Lord Sempill, Earl of Shannon (eligible to stand by virtue of his junior title, Baron Carleton, as his senior title is in the Peerage of Ireland), Duke of Somerset, Lord Sudeley, Lord Terrington, and Lord Tryon

#### After the death of Lord Milner of Leeds

Labour hereditary peers' by-election, October 2003 :
| Candidate | Count 1 |
| YLord Grantchester | 2 |
| Viscount Hanworth | 1 |
| 9 others | 0 |
| Electorate: 3 Valid: 3 Spoilt: 0 Quota: 1 Turnout: 3 |||||
* ↑ Lord Biddulph, Earl of Carlisle, Lord Clifford of Chudleigh, Lord Hacking, Lord HolmPatrick, Earl of Kimberley, Lord Monkswell, Viscount Samuel, and Lord Vaux of Harrowden

### 2004

After the death of Lord Vivian:
Conservative hereditary peers' by-election, May 2004 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 |
| YViscount Trenchard | 8 | 8 | 8 | 8 | 9 | 10 | 12 | 12 | 14 | 17 | 24 |
| Viscount Eccles | 7 | 7 | 8 | 9 | 9 | 9 | 9 | 10 | 13 | 15 | 18 |
| Earl Cathcart | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 10 | 11 | 13 | - |
| Viscount Weir | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | - | - |
| Viscount Torrington | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | - | - | - |
| Lord de Mauley | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - |
| Lord Rathcavan | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - |
| Lord Terrington | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
| Lord Norrie | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Lord Harlech | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
| Viscount Brentford | 1 | 1 | - | - | - | - | - | - | - | - | - |
| Viscount Addison | 1 | - | - | - | - | - | - | - | - | - | - |
| 25 others | 0 | - | - | - | - | - | - | - | - | - | - |
| Electorate: 48 Valid: 45 Spoilt: 0 Quota: 23 Turnout: 45 |||||||||||||||
* ↑ Lord Ashbourne, Lord Biddulph, Lord Birdwood, Lord Cadman, Lord Carew, Lord Chesham, Earl Cowley, Lord de Ramsey, Lord Gainford, Viscount Hood, Lord Kenilworth, Lord Killearn, Earl of Kimberley, Earl of Kinnoull, Earl of Lauderdale, Lord Margadale, Lord Milverton, Lord Morris, Lord Newall, Lord Pender, Lord Poole, Lord Rowallan, Lord Strathcarron, Lord Sudeley, and Lord Vaux of Harrowden

### 2005

After the death of the Earl Russell:
Liberal Democrat hereditary peers' by-election, January 2005 :
| Candidate | Count 1 |
| YEarl of Glasgow | 4 |
| 2 others | 0 |
| Electorate: 4 Valid: 4 Spoilt: 0 Quota: Turnout: 4 |||||
* ↑ Earl of Carlisle and Lord Kennet
After the death of Lord Burnham:
Conservative hereditary peers' by-election, March 2005 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 |
| YLord de Mauley | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 16 | 21 |
| Earl Cathcart | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 10 | 11 | 13 |
| Viscount Eccles | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 9 | 10 | - |
| Viscount Torrington | 2 | 3 | 4 | 4 | 4 | 5 | 7 | 7 | - | - |
| Earl of Stockton | 4 | 4 | 4 | 4 | 5 | 6 | 7 | - | - | - |
| Viscount Weir | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - |
| Lord Rathcavan | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - |
| Lord de Ramsey | 2 | 2 | 2 | 2 | - | - | - | - | - | - |
| Lord Norrie | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Lord Margadale | 1 | 1 | - | - | - | - | - | - | - | - |
| Viscount Addison | 1 | - | - | - | - | - | - | - | - | - |
| 25 others | 0 | - | - | - | - | - | - | - | - | - |
| Electorate: 47 Valid: 42 Spoilt: 0 Quota: 21 Turnout: 42 ||||||||||||||
* ↑ Earl Alexander of Tunis, Lord Biddulph, Lord Birdwood, Lord Cadman, Earl Cowley, Viscount Gage, Lord Gainford, Viscount Gormanston (eligible to stand by virtue of his junior title, Baron Gormanston, as his senior title is in the Peerage of Ireland), Lord Harlech, Viscount Hill, Viscount Hood, Lord Killearn, Earl of Kimberley, Earl of Kinnoull, Lord Layton, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Milverton, Lord Morris, Lord Newall, Lord Pender, Lord Poole, Lord Rowallan, Lord Sudeley, Lord Terrington, and Lord Vivian
After the death of Lord Aberdare:
Hereditary peers' by-election (whole House eligible to vote), March 2005 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 | Count 16 | Count 17 | Count 18 | Count 19 | Count 20 | Count 21 | Count 22 | Count 23 | Count 24 |
| | Conservative | YViscount Eccles | 92 | 92 | 92 | 92 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 93 | 94 | 94 | 96 | 96 | 98 | 102 | 104 | 111 | 119 | 129 | 146 | 168 |
| | Labour | Lord Monkswell | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 65 | 65 | 67 |
| | Liberal Democrats | Earl of Carlisle | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 51 | 51 | 51 | 51 | 51 | 53 | 54 | 54 | 55 | 59 | 61 |
| | Conservative | Earl Cathcart | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 35 | 36 | 36 | 38 | 40 | 41 | 44 | - |
| | Conservative | Earl of Stockton | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 31 | 34 | 35 | 39 | - | - |
| | Conservative | Lord Norrie | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 25 | 27 | 27 | 28 | 31 | - | - | - |
| | Conservative | Viscount Torrington | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | - | - | - | - |
| | Conservative | Lord de Ramsey | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 13 | 14 | - | - | - | - | - |
| | Crossbench | Lord Birkett | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 12 | - | - | - | - | - | - |
| | Conservative | Lord Rathcavan | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | - | - | - | - | - | - | - |
| | Conservative | Viscount Weir | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | - | - | - | - | - | - | - | - |
| | Conservative | Lord Poole | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Hood | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Margadale | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Terrington | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Tryon | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | UKIP | Duke of Rutland | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Addison | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Vivian | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Rowallan | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Massereene and Ferrard | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Kinnoull | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Killearn | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Glanusk | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Clifford of Chudleigh | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl Alexander of Tunis | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Others | 10 others | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 687 Valid: 348 Spoilt: 4 Quota: 174 Turnout: 352 ||||||||||||||||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Birdwood, Lord Cadman, Lord Gainford, Lord Harlech, Earl of Kimberley, Lord Milverton, Lord Morris, Lord Newall, and Lord Sudeley
After the death of Baroness Strange:
Crossbench hereditary peers' by-election, June 2005 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YViscount Montgomery of Alamein | 11 | 11 | 11 | 11 | 11 | 11 |
| Earl of Effingham | 4 | 4 | 5 | 6 | 7 | 8 |
| Earl of Clancarty | 5 | 5 | 5 | 5 | 6 | - |
| Earl of Stair | 3 | 3 | 4 | 4 | - | - |
| Lord Gladwyn | 2 | 3 | 3 | - | - | - |
| Earl of Iveagh | 2 | 2 | - | - | - | - |
| Lord Milford | 1 | - | - | - | - | - |
| 19 others | 0 | - | - | - | - | - |
| Electorate: 29 Valid: 28 Spoilt: 0 Quota: 14 Turnout: 28 ||||||||||
* ↑ Eligible to stand by virtue of his junior title, Viscount Clancarty, as his senior title is in the Peerage of Ireland
* ↑ Lord Amherst of Hackney, Lord Birdwood, Lord Birkett, Lord Carew, Lord Clifford of Chudleigh, Earl of Cromer, Lord Cromwell, Earl of Drogheda (eligible to stand by virtue of his junior title, Baron Moore, as his senior title is in the Peerage of Ireland), Lord Glanusk, Earl of Kimberley, Viscount Leathers, Lord Norrie, Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Viscount of Oxfuird, Duke of Rutland, Viscount Samuel, Lord Sudeley, Lord Tryon, and Lord Vernon

### 2007

After the death of Lord Mowbray and Stourton:
Conservative hereditary peers' by-election, March 2007 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 |
| YEarl Cathcart | 10 | 11 | 11 | 12 | 12 | 16 | 21 |
| Viscount Younger of Leckie | 12 | 13 | 13 | 14 | 15 | 16 | 17 |
| Earl of Stockton | 6 | 6 | 6 | 7 | 9 | 11 | - |
| Viscount Torrington | 2 | 4 | 6 | 6 | 7 | - | - |
| Lord Rathcavan | 4 | 4 | 4 | 4 | - | - | - |
| Lord de Ramsey | 3 | 3 | 3 | - | - | - | - |
| Viscount Weir | 1 | 2 | - | - | - | - | - |
| Earl Alexander of Tunis | 1 | - | - | - | - | - | - |
| Lord Birdwood | 1 | - | - | - | - | - | - |
| Lord Chesham | 1 | - | - | - | - | - | - |
| Earl of Iveagh | 1 | - | - | - | - | - | - |
| Lord Margadale | 1 | - | - | - | - | - | - |
| 30 others | 0 | - | - | - | - | - | - |
| Electorate: 47 Valid: 43 Spoilt: 0 Quota: 22 Turnout: 43 |||||||||||
* ↑ Lord Abinger, Viscount Addison, Lord Annaly, Lord Ashbourne, Lord Biddulph, Lord Cadman, Lord Darling, Lord Gainford, Viscount Gormanston (eligible to stand by virtue of his junior title, Baron Gormanston, as his senior title is in the Peerage of Ireland), Lord Harlech, Viscount Hill, Viscount Hood, Lord Killearn, Earl of Kinnoull, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Monckton of Brenchley, Lord Morris, Lord Newall, Lord Ogmore, Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Lord Pender, Lord Polwarth, Lord Poole, Lord Rowallan, Lord Seaford, Lord Sudeley, Lord Swansea, Earl of Swinton, Lord Terrington, Lord Vivian, and Earl of Woolton

### 2008

After the death of the Baroness Darcy de Knayth:
Crossbench hereditary peers' by-election, May 2008 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YEarl of Stair | 6 | 6 | 7 | 9 | 11 | 14 |
| Earl of Clancarty | 7 | 8 | 8 | 9 | 9 | 10 |
| Lord Aberdare | 4 | 4 | 4 | 4 | 5 | - |
| Viscount Devonport | 3 | 3 | 3 | 3 | - | - |
| Lord Cromwell | 2 | 3 | 3 | - | - | - |
| Lord Darcy de Knayth | 2 | 2 | - | - | - | - |
| Lord Milford | 1 | - | - | - | - | - |
| Lord Terrington | 1 | - | - | - | - | - |
| 25 others | 0 | - | - | - | - | - |
| Electorate: 29 Valid: 26 Spoilt: 0 Quota: 14 Turnout: 26 ||||||||||
* ↑ Eligible to stand by virtue of his junior title, Viscount Clancarty, as his senior title is in the Peerage of Ireland
* ↑ Earl Alexander of Tunis, Lord Cadman, Lord Carew, Lord Clifford of Chudleigh, Earl of Cromer, Earl of Effingham, Lord Harlech, Viscount Hill, Earl of Iveagh, Earl of Kimberley, Lord Margadale, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Monckton of Brenchley, Lord Napier of Magdala, Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Lord Poole, Lord Revelstoke, Duke of Rutland, Viscount Samuel, Earl of Shaftesbury, Earl of Stockton, Lord Sudeley, Lord Tryon, Lord Vernon, and Lord Wharton

### 2009

After the death of the Viscount Bledisloe:
Crossbench hereditary peers' by-election, July 2009 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Aberdare | 10 | 12 | 12 | 12 | 13 |
| Lord Sempill | 2 | 3 | 5 | 5 | 5 |
| Viscount Hood | 4 | 4 | 4 | 4 | 4 |
| Earl of Clancarty | 3 | 3 | 3 | 4 | - |
| Lord Hacking | 2 | 3 | 3 | - | - |
| Duke of Somerset | 2 | 2 | - | - | - |
| Lord Cromwell | 1 | - | - | - | - |
| Earl of Effingham | 1 | - | - | - | - |
| Lord Polwarth | 1 | - | - | - | - |
| Lord Wrenbury | 1 | - | - | - | - |
| 23 others | 0 | - | - | - | - |
| Electorate: 29 Valid: 27 Spoilt: 0 Quota: 13 Turnout: 27 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Viscount Clancarty, as his senior title is in the Peerage of Ireland
* ↑ Viscount Addison, Earl of Balfour, Lord Birdwood, Lord Cadman, Lord Carew, Lord Clifford of Chudleigh, Earl of Cromer, Viscount Devonport, Lord Gainford, Viscount Hill, Earl of Kimberley, Viscount Leathers, Earl of Lonsdale, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Monckton of Brenchley, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Ogmore, Lord Robertson of Oakridge, Earl of Shaftesbury, Earl of Stockton, Lord Sudeley, Lord Tryon, and Lord Wharton

### 2010

After the death of the Viscount Colville of Culross:
Crossbench hereditary peers' by-election, June 2010 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YEarl of Clancarty | 10 | 10 | 11 | 12 | 13 |
| Earl of Lytton | 3 | 5 | 5 | 8 | 8 |
| Viscount Hood | 3 | 4 | 5 | 5 | - |
| Lord Sempill | 4 | 4 | 4 | - | - |
| Viscount Runciman of Doxford | 2 | 3 | - | - | - |
| Earl of Albemarle | 1 | - | - | - | - |
| Earl Cairns | 1 | - | - | - | - |
| Lord Cromwell | 1 | - | - | - | - |
| Lord Hacking | 1 | - | - | - | - |
| 15 others | 0 | - | - | - | - |
| Electorate: 29 Valid: 26 Spoilt: 0 Quota: 13 Turnout: 26 |||||||
* ↑ Eligible to stand by virtue of his junior title, Viscount Clancarty, as his senior title is in the Peerage of Ireland
* ↑ Marquess of Abergavenny, Lord Birdwood, Lord Cadman, Earl of Cromer, Lord Darcy de Knayth, Lord Harlech, Viscount Hill, Earl of Kimberley, Viscount Leathers, Viscount Monckton of Brenchley, Lord Ogmore, Earl of Shaftesbury, Lord Sudeley, Lord Tryon, and Viscount Weir
After the death of the Earl of Northesk:
Conservative hereditary peers' by-election, June 2010 :
| Candidate | Count 1 | Count 2 | Count 3 |
| YViscount Younger of Leckie | 17 | 21 | 22 |
| Earl of Stockton | 5 | 7 | 7 |
| Lord Ashton of Hyde | 4 | 4 | 5 |
| Lord Rathcavan | 3 | 3 | 4 |
| Lord Colgrain | 2 | 3 | 3 |
| Lord de Ramsey | 2 | 3 | 3 |
| Marquess of Abergavenny | 2 | 2 | - |
| Earl of Limerick | 2 | 2 | - |
| Viscount Addison | 1 | - | - |
| Lord Bethell | 1 | - | - |
| Lord Birdwood | 1 | - | - |
| Lord Bolton | 1 | - | - |
| Viscount Gormanston | 1 | - | - |
| Lord Gray | 1 | - | - |
| Lord Harlech | 1 | - | - |
| Lord Margadale | 1 | - | - |
| 17 others | 0 | - | - |
| Electorate: 47 Valid: 45 Spoilt: 0 Quota: 22 Turnout: 45 |||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Gormanston, as his senior title is in the Peerage of Ireland
* ↑ Earl Alexander of Tunis, Lord Biddulph, Lord Borwick, Lord Cadman, Lord Gainford, Earl of Harrowby, Viscount Hill, Lord Killearn, Earl of Kinnoull, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Poole, Lord Rowallan, Lord Sudeley, Lord Swansea, Lord Vivian, and Viscount Weir

### 2011

After the death of the Lord Strabolgi:
Hereditary peers' by-election (whole House eligible to vote), March 2011 :
| Party | Party | Candidate | Count 1 |
| | Labour | YViscount Hanworth | 233 |
| | Liberal Democrats | Earl of Carlisle | 26 |
| | Conservative | Lord de Ramsey | 24 |
| | Crossbench | Lord Hacking | 24 |
| | Labour | Lord Monkswell | 21 |
| | Conservative | Earl of Stockton | 20 |
| | Conservative | Earl of Harrowby | 17 |
| | Crossbench | Lord Cromwell | 8 |
| | Conservative | Earl of Limerick | 7 |
| | Conservative | Lord Killearn | 6 |
| | Conservative | Earl Alexander of Tunis | 5 |
| | Conservative | Lord Margadale | 5 |
| | Conservative | Earl of Kinnoull | 4 |
| | Liberal Democrats | Lord Ogmore | 4 |
| | Conservative | Lord Rowallan | 3 |
| | Conservative | Viscount Addison | 2 |
| | Crossbench | Lord Tryon | 2 |
| | Conservative | Lord Birdwood | 1 |
| | Crossbench | Earl of Cromer | 1 |
| | Conservative | Lord Sudeley | 1 |
| | Others | 4 others | 0 |
| Electorate: 769 Valid: 414 Spoilt: 2 Quota: 207 Turnout: 416 |||||
* ↑ Lord Gainford, Viscount Hill, Lord Parmoor, and Lord Vivian
After the death of the Lord Monson:
Crossbench hereditary peers' by-election, May 2011 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YEarl of Lytton | 7 | 7 | 9 | 11 | 15 |
| Duke of Somerset | 6 | 7 | 9 | 9 | 9 |
| Viscount Colville of Culross | 6 | 6 | 6 | 7 | - |
| Lord Cromwell | 3 | 3 | 3 | - | - |
| Earl of Oxford and Asquith | 2 | 2 | - | - | - |
| Earl of Shaftesbury | 2 | 2 | - | - | - |
| Earl of Drogheda | 1 | - | - | - | - |
| 7 others | 0 | - | - | - | - |
| Electorate: 28 Valid: 27 Spoilt: 0 Quota: 14 Turnout: 27 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Moore, as his senior title is in the Peerage of Ireland
* ↑ Lord Birdwood, Lord Cadman, Viscount Hill, Earl of Kimberley, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Ogmore, and Lord Sudeley
After the death of the Earl of Onslow:
Conservative hereditary peers' by-election, July 2011 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 |
| YLord Ashton of Hyde | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 21 | 23 |
| Lord Borwick | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 |
| Lord de Ramsey | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 |
| Earl of Harrowby | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Earl of Stockton | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 4 | 4 |
| Marquess of Abergavenny | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - |
| Earl of Oxford and Asquith | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - |
| Earl of Onslow | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - |
| Lord Rowallan | 1 | 1 | 1 | 1 | 1 | - | - | - | - |
| Lord Rathcavan | 1 | 1 | 1 | 1 | - | - | - | - | - |
| Lord Margadale | 1 | 1 | 1 | - | - | - | - | - | - |
| Earl of Limerick | 1 | 1 | - | - | - | - | - | - | - |
| Viscount Addison | 1 | - | - | - | - | - | - | - | - |
| 8 others | 0 | - | - | - | - | - | - | - | - |
| Electorate: 47 Valid: 45 Spoilt: 0 Quota: 23 Turnout: 45 |||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Earl Alexander of Tunis, Lord Biddulph, Lord Cadman, Lord Killearn, Earl of Kinnoull, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), and Lord Vivian
After the death of the Lord Ampthill:
Hereditary peers' by-election (whole House eligible to vote), July 2011 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 |
| | Crossbench | YViscount Colville of Culross | 77 | 77 | 78 | 78 | 78 | 78 | 79 | 79 | 80 | 80 | 81 | 88 | 94 | 101 | 126 |
| | Crossbench | Duke of Somerset | 76 | 76 | 76 | 76 | 76 | 78 | 78 | 78 | 79 | 80 | 81 | 86 | 91 | 98 | 104 |
| | Crossbench | Lord Hacking | 52 | 52 | 52 | 52 | 52 | 54 | 54 | 56 | 56 | 57 | 59 | 60 | 66 | 73 | - |
| | Conservative | Earl of Stockton | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 33 | 33 | 33 | 38 | - | - |
| | Liberal Democrats | Lord Kennet | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 26 | 26 | - | - | - |
| | Crossbench | Earl of Shaftesbury | 12 | 13 | 13 | 13 | 13 | 14 | 16 | 16 | 16 | 17 | 18 | - | - | - | - |
| | Liberal Democrats | Earl of Carlisle | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | - | - | - | - | - |
| | Conservative | Earl of Limerick | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 9 | 12 | - | - | - | - | - | - |
| | Conservative | Lord Margadale | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | - | - | - | - | - | - | - |
| | Conservative | Earl of Kinnoull | 7 | 7 | 7 | 7 | 7 | 7 | 7 | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Hood | 5 | 5 | 5 | 6 | 6 | 6 | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Cromwell | 4 | 4 | 4 | 4 | 5 | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Killearn | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Cadman | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Albemarle | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Biddulph | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Tryon | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Vivian | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Others | 2 others | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 769 Valid: 313 Spoilt: 3 Quota: 157 Turnout: 316 |||||||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Napier of Magdala and Lord Rowallan

### 2013

After the death of Earl Ferrers:
Conservative hereditary peers' by-election, February 2013 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 |
| YViscount Ridley | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 18 | 18 | 20 | 21 | 24 |
| Viscount Hailsham | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 |
| Earl of Harrowby | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 8 |
| Lord de Ramsey | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 6 | - |
| Marquess of Abergavenny | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | - | - |
| Earl of Stockton | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | - | - | - |
| Lord Borwick | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - |
| Earl of Oxford and Asquith | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - |
| Lord Windlesham | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - |
| Lord Vivian | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Lord Swansea | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - |
| Lord Monson | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - |
| Lord Margadale | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - |
| Lord Darling | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - |
| Earl of Clanwilliam | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Lord Ampthill | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 11 others | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 48 Valid: 46 Spoilt: 0 Quota: 23 Turnout: 46 ||||||||||||||||||
* ↑ Created Baron Hailsham of Kettlethorpe for Life in 2015
* ↑ Eligible to stand by virtue of his junior title, Baron Clanwilliam, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Cadman, Earl of Cromer, Viscount Gormanston (eligible to stand by virtue of his junior title, Baron Gormanston, as his senior title is in the Peerage of Ireland), Lord Harlech, Lord Killearn, Earl of Onslow, Lord Parmoor, Lord Rowallan, Lord Somerleyton, and Lord Sudeley
After the death of the Lord Reay:
Hereditary peers' by-election (whole House eligible to vote), July 2013 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 | Count 16 | Count 17 |
| | Conservative | YLord Borwick | 104 | 105 | 105 | 106 | 106 | 107 | 109 | 109 | 109 | 110 | 112 | 113 | 114 | 117 | 120 | 135 | 160 |
| | Conservative | Viscount Hailsham | 104 | 104 | 105 | 105 | 106 | 106 | 106 | 106 | 106 | 106 | 107 | 107 | 108 | 112 | 113 | 117 | 129 |
| | Conservative | Earl of Stockton | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 36 | 38 | 39 | 41 | 42 | 44 | 56 | 61 | - |
| | Conservative | Earl of Harrowby | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 26 | 26 | 27 | 29 | 31 | - | - |
| | Liberal Democrats | Lord Kennet | 17 | 17 | 17 | 17 | 17 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | - | - | - |
| | Conservative | Lord Swansea | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 13 | - | - | - | - |
| | Conservative | Lord Ampthill | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | - | - | - | - | - |
| | Crossbench | Lord Napier and Ettrick | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | - | - | - | - | - | - |
| | Conservative | Lord Margadale | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | - | - | - | - | - | - | - |
| | Conservative | Lord Windlesham | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - |
| | Conservative | Lord Rowallan | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Onslow | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - |
| | UKIP | Viscount Massereene and Ferrard | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - |
| | Liberal Democrats | Earl of Carlisle | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Earl of Albemarle | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Hemphill | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Biddulph | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Cadman | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Harlech | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Others | 4 others | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 753 Valid: 334 Spoilt: 2 Quota: 167 Turnout: 336 |||||||||||||||||||||
* ↑ Created Baron Hailsham of Kettlethorpe for Life in 2015
* ↑ Eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland
* ↑ Lord Fisher, Lord Morris, Lord Ogmore, and Lord Sudeley

### 2014

After the death of the Lord Moran:
Crossbench hereditary peers' by-election, April 2014 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Cromwell | 9 | 10 | 10 | 12 | 13 |
| Lord Russell of Liverpool | 7 | 7 | 7 | 9 | 12 |
| Lord Sempill | 4 | 4 | 5 | 5 | - |
| Lord Aldington | 4 | 4 | 5 | - | - |
| Lord Thurlow | 2 | 2 | - | - | - |
| Lord Napier and Ettrick | 1 | - | - | - | - |
| 7 others | 0 | - | - | - | - |
| Electorate: 29 Valid: 27 Spoilt: 0 Quota: 14 Turnout: 27 |||||||||
* ↑ Earl of Albemarle, Lord Darling, Lord Hacking, Lord Harlech, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Monson, and Earl Temple of Stowe
After the death of the Lord Methuen:
Hereditary peers' by-election (whole House eligible to vote), October 2014 :
| Party | Party | Candidate | Count 1 |
| | Liberal Democrats | YEarl of Oxford and Asquith | 155 |
| | Crossbench | Lord Napier and Ettrick | 35 |
| | Conservative | Earl of Stockton | 31 |
| | Liberal Democrats | Lord Kennet | 29 |
| | Conservative | Lord Margadale | 13 |
| | Crossbench | Viscount Massereene and Ferrard | 6 |
| | Crossbench | Lord Somerleyton | 6 |
| | Conservative | Lord Harlech | 4 |
| | Crossbench | Lord Calverley | 1 |
| | Conservative | Lord Layton | 1 |
| | Conservative | Lord Middleton | 1 |
| | Conservative | Lord Sudeley | 1 |
| | Others | 3 others | 0 |
| Electorate: 776 Valid: 283 Spoilt: 0 Quota: 142 Turnout: 283 |||||
* ↑ Eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Cadman, and Lord Rowallan
After the death of the Viscount Allenby of Megiddo:
Crossbench hereditary peers' by-election, December 2014 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Russell of Liverpool | 7 | 8 | 10 | 10 | 13 |
| Duke of Somerset | 4 | 4 | 4 | 5 | 5 |
| Lord Thurlow | 4 | 4 | 4 | 5 | 5 |
| Lord Napier and Ettrick | 3 | 3 | 3 | 4 | - |
| Earl of Kinnoull | 3 | 3 | 3 | - | - |
| Viscount Hood | 3 | 3 | - | - | - |
| Earl of Clanwilliam | 1 | - | - | - | - |
| 11 others | 0 | - | - | - | - |
| Electorate: 27 Valid: 25 Spoilt: 0 Quota: 13 Turnout: 25 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Clanwilliam, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Aldington, Lord Cadman, Lord Calverley, Lord Darling, Lord Grantley, Lord Harlech, Earl Lloyd-George of Dwyfor, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Sempill, and Lord Sudeley
After the retirement of the Lord Cobbold:
Crossbench hereditary peers' by-election, December 2014 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YDuke of Somerset | 6 | 7 | 8 | 8 | 12 |
| Lord Thurlow | 8 | 8 | 9 | 10 | 11 |
| Earl of Kinnoull | 4 | 4 | 4 | 5 | - |
| Lord Napier and Ettrick | 3 | 3 | 3 | - | - |
| Viscount Hood | 3 | 3 | - | - | - |
| Earl of Clanwilliam | 1 | - | - | - | - |
| 11 others | 0 | - | - | - | - |
| Electorate: 27 Valid: 25 Spoilt: 0 Quota: 13 Turnout: 25 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Clanwilliam, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Aldington, Lord Cadman, Lord Calverley, Lord Darling, Lord Grantley, Lord Harlech, Earl Lloyd-George of Dwyfor, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Sempill, and Lord Sudeley

### 2015

After the retirement of the Lord Chorley:
Crossbench hereditary peers' by-election, February 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YLord Thurlow | 8 | 9 | 9 | 9 | 10 | 13 |
| Viscount Hood | 4 | 4 | 4 | 4 | 4 | 4 |
| Lord Napier and Ettrick | 3 | 3 | 3 | 3 | 3 | 3 |
| Earl of Cork and Orrery | 2 | 2 | 3 | 3 | 3 | 3 |
| Lord Sempill | 2 | 2 | 2 | 3 | 3 | 3 |
| Lord Aldington | 2 | 2 | 2 | 2 | 3 | - |
| Earl of Kinnoull | 2 | 2 | 2 | 2 | - | - |
| Lord Hemphill | 1 | 1 | 1 | - | - | - |
| Earl of Clanwilliam | 1 | 1 | - | - | - | - |
| Earl Lloyd-George of Dwyfor | 1 | - | - | - | - | - |
| 8 others | 0 | - | - | - | - | - |
| Electorate: 28 Valid: 26 Spoilt: 0 Quota: 13 Turnout: 26 ||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Boyle of Marston, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Clanwilliam, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Cadman, Lord Darling, Lord Hampton, Duke of Marlborough, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Sudeley, and Lord Tryon
After the retirement of the Lady Saltoun of Abernethy:
Crossbench hereditary peers' by-election, February 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YEarl of Kinnoull | 9 | 9 | 10 | 10 | 11 | 12 |
| Viscount Hood | 4 | 4 | 4 | 4 | 4 | 5 |
| Lord Sempill | 2 | 3 | 3 | 3 | 4 | 4 |
| Lord Napier and Ettrick | 3 | 3 | 3 | 3 | 3 | 3 |
| Earl of Cork and Orrery | 2 | 2 | 2 | 3 | 3 | - |
| Lord Aldington | 2 | 2 | 2 | 2 | - | - |
| Earl of Clanwilliam | 1 | 1 | 1 | - | - | - |
| Earl Lloyd-George of Dwyfor | 1 | 1 | - | - | - | - |
| Lord Hemphill | 1 | - | - | - | - | - |
| 8 others | 0 | - | - | - | - | - |
| Electorate: 28 Valid: 26 Spoilt: 0 Quota: 13 Turnout: 26 ||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Boyle of Marston, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Clanwilliam, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Cadman, Lord Darling, Lord Hampton, Duke of Marlborough, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Sudeley, and Lord Tryon
After the retirement of the Viscount Tenby:
Crossbench hereditary peers' by-election, July 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YLord Mountevans | 9 | 9 | 9 | 9 | 9 | 10 |
| Lord Aldington | 3 | 4 | 5 | 5 | 5 | 5 |
| Viscount Hood | 3 | 3 | 4 | 5 | 5 | 5 |
| Lord Sempill | 3 | 3 | 3 | 3 | 4 | - |
| Earl of Albemarle | 2 | 2 | 2 | 2 | - | - |
| Lord Napier and Ettrick | 2 | 2 | 2 | - | - | - |
| Lord Darling | 2 | 2 | - | - | - | - |
| Lord Trevethin and Oaksey | 1 | - | - | - | - | - |
| 11 others | 0 | - | - | - | - | - |
| Electorate: 28 Valid: 25 Spoilt: 0 Quota: 13 Turnout: 25 ||||||||||
* ↑ Lord Cadman, Lord Cawley, Earl of Cork and Orrery (eligible to stand by virtue of his junior title, Baron Boyle of Marston, as his senior title is in the Peerage of Ireland), Lord Hampton, Lord Harlech, Lord Kilmarnock, Earl Lloyd-George of Dwyfor, Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Lord Rathcavan, Duke of Rutland, and Lord Sudeley
After the retirement of the Lord Luke:
Conservative hereditary peers' by-election, September 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YDuke of Wellington | 18 | 18 | 18 | 19 | 21 |
| Marquess of Abergavenny | 6 | 6 | 6 | 6 | 6 |
| Earl of Harrowby | 5 | 6 | 6 | 6 | 6 |
| Earl Ferrers | 3 | 3 | 4 | 4 | 5 |
| Earl of Limerick | 3 | 3 | 3 | 3 | 3 |
| Lord Windlesham | 3 | 3 | 3 | 3 | - |
| Earl of Stockton | 1 | 1 | 1 | - | - |
| Lord Swansea | 1 | 1 | - | - | - |
| Lord Middleton | 1 | - | - | - | - |
| 7 others | 0 | - | - | - | - |
| Electorate: 48 Valid: 41 Quota: 21 Turnout: 41 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Ampthill, Lord Biddulph, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Rathcavan, Lord Rowallan, and Lord Sudeley
After the retirement of the Viscount Montgomery of Alamein:
Crossbench hereditary peers' by-election, October 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Trevethin and Oaksey | 10 | 11 | 11 | 11 | 12 |
| Lord Aldington | 6 | 6 | 6 | 6 | 7 |
| Earl of Cork and Orrery | 3 | 3 | 3 | 3 | 3 |
| Lord Napier and Ettrick | 3 | 3 | 3 | 3 | - |
| Viscount Hood | 2 | 2 | 2 | - | - |
| Lord Vaux of Harrowden | 1 | 1 | - | - | - |
| Lord Clifford of Chudleigh | 1 | - | - | - | - |
| 10 others | 0 | - | - | - | - |
| Electorate: 29 Valid: 26 Spoilt: 0 Quota: 13 Turnout: 26 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Boyle of Marston, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Cadman, Lord Darling, Lord Harlech, Earl Lloyd-George of Dwyfor, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Monson, Duke of Rutland, Lord Southampton, and Lord Sudeley
After the death of the Lord Montagu of Beaulieu:
Conservative hereditary peers' by-election, November 2015 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 |
| YLord Fairfax of Cameron | 9 | 10 | 10 | 10 | 10 | 13 | 15 | 16 | 21 | 27 |
| Earl of Harrowby | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 12 | 12 | 14 |
| Lord Windlesham | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 9 | 10 | - |
| Lord Colgrain | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | - | - |
| Lord de Ramsey | 3 | 3 | 3 | 3 | 4 | 4 | 4 | - | - | - |
| Marquess of Abergavenny | 3 | 3 | 4 | 4 | 4 | 4 | - | - | - | - |
| Earl of Limerick | 3 | 3 | 3 | 3 | 4 | - | - | - | - | - |
| Earl of Stockton | 2 | 2 | 2 | 2 | - | - | - | - | - | - |
| Lord Ashcombe | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Earl Ferrers | 1 | 1 | - | - | - | - | - | - | - | - |
| Lord Middleton | 1 | - | - | - | - | - | - | - | - | - |
| 3 others | 0 | - | - | - | - | - | - | - | - | - |
| Electorate: 48 Valid: 44 Spoilt: 0 Quota: 22 Turnout: 44 ||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Cadman, and Lord Swansea

### 2016

After the death of the Lord Avebury:
Liberal Democrat hereditary peers' by-election, April 2016 :
| Candidate | Count 1 |
| YViscount Thurso | 3 |
| 6 others | 0 |
| Electorate: 3 Valid: 3 Spoilt: 0 Quota: 2 Turnout: 3 |||||
* ↑ Lord Calverley, Earl of Carlisle, Lord Kennet, Earl Lloyd-George of Dwyfor, Earl Russell, and Lord Somerleyton
After the removal for non-attendance of the Lord Bridges:
Crossbench hereditary peers' by-election, July 2016 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 |
| YEarl of Cork and Orrery | 12 | 12 | 12 | 12 | 12 | 13 | 15 |
| Lord Vaux of Harrowden | 5 | 5 | 5 | 5 | 7 | 8 | 8 |
| Viscount Hood | 2 | 3 | 4 | 5 | 5 | 6 | - |
| Lord Hemphill | 3 | 3 | 3 | 3 | 3 | - | - |
| Lord Aldington | 2 | 2 | 2 | 2 | - | - | - |
| Earl of Albemarle | 1 | 1 | 1 | - | - | - | - |
| Earl of Limerick | 1 | 1 | - | - | - | - | - |
| Lord Napier and Ettrick | 1 | - | - | - | - | - | - |
| 9 others | 0 | - | - | - | - | - | - |
| Electorate: 31 Valid: 27 Spoilt: 0 Quota: 14 Turnout: 27 |||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Boyle of Marston, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Cadman, Lord Darling, Lord Hankey, Viscount Massereene and Ferrard (eligible to stand by virtue of his junior title, Baron Oriel, as his senior title is in the Peerage of Ireland), Lord Oranmore and Browne (eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland), Viscount Powerscourt (eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland), Duke of Rutland, Lord Somerleyton, and Lord Southampton

### 2017

After the death of the Lord Lyell:
Hereditary peers' by-election (whole House eligible to vote), March 2017 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 | Count 16 | Count 17 | Count 18 | Count 19 | Count 20 | Count 21 | Count 22 | Count 23 | Count 24 | Count 25 |
| | Conservative | YLord Colgrain | 104 | 104 | 104 | 104 | 104 | 104 | 104 | 105 | 105 | 105 | 108 | 108 | 108 | 109 | 109 | 109 | 111 | 111 | 113 | 115 | 118 | 118 | 126 | 137 | 143 |
| | Conservative | Lord Bethell | 54 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 57 | 59 | 60 | 62 | 62 | 64 | 68 | 70 | 76 | 82 | 90 | 108 |
| | Conservative | Earl of Stockton | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 35 | 37 | 38 | 38 | 39 | 39 | 41 | 41 | 42 | 43 | 44 | 45 | 46 | 49 | 58 | 59 | 62 | - |
| | Conservative | Marquess of Abergavenny | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 30 | 31 | 32 | 35 | 36 | 37 | 38 | - | - |
| | Conservative | Earl of Harrowby | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 19 | 20 | 23 | 23 | - | - | - |
| | Liberal Democrats | Earl Lloyd-George of Dwyfor | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 15 | 23 | 23 | 23 | 23 | - | - | - | - |
| | Conservative | Lord Windlesham | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | - | - | - | - | - |
| | Conservative | Lord Napier and Ettrick | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | - | - | - | - | - | - |
| | Crossbench | Lord Darling | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 14 | 14 | 14 | - | - | - | - | - | - | - |
| | Liberal Democrats | Lord Kennet | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 13 | 14 | 14 | - | - | - | - | - | - | - | - |
| | Conservative | Lord Strathcarron | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | - | - | - | - | - | - | - | - | - |
| | Crossbench | Viscount Powerscourt | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Mostyn | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl of Limerick | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Swansea | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Liberal Democrats | Lord Harlech | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Macpherson of Drumochter | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Earl Alexander of Tunis | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Viscount Hood | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Addison | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Mountgarret | 2 | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Biddulph | 2 | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Independent | Lord Gainford | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Hampton | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Somerleyton | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Hankey | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Cadman | 0 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Electorate: 803 Valid: 346 Spoilt: 0 Quota: 173 Turnout: 346 |||||||||||||||||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland
After the retirement of the Lord Walpole:
Crossbench hereditary peers' by-election, July 2017 :
| Candidate | Count 1 |
| YLord Vaux of Harrowden | 16 |
| Lord Aldington | 4 |
| Lord Mostyn | 4 |
| Lord Darling | 1 |
| Lord Hemphill | 1 |
| Viscount Powerscourt | 1 |
| 3 others | 0 |
| Electorate: 31 Valid: 27 Spoilt: 0 Quota: 14 Turnout: 27 |||||
* ↑ Eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland
* ↑ Lord Cadman, Lord Hayter, and Lord Somerleyton
* Viscount Hill originally announced his candidacy but later withdrew.

### 2018

After the retirement of the Earl Baldwin of Bewdley:
Crossbench hereditary peers' by-election, July 2018 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YEarl of Devon | 7 | 8 | 9 | 10 | 10 | 12 |
| Lord Ravensdale | 4 | 4 | 5 | 5 | 5 | 5 |
| Lord Aldington | 4 | 4 | 4 | 4 | 4 | 4 |
| Earl of Eldon | 2 | 2 | 2 | 2 | 3 | 3 |
| Duke of Hamilton and Brandon | 2 | 2 | 2 | 2 | 2 | - |
| Viscount Hood | 2 | 2 | 2 | 2 | - | - |
| Lord Bridges | 2 | 2 | 2 | - | - | - |
| Earl of Carnarvon | 2 | 2 | - | - | - | - |
| Lord Meston | 1 | - | - | - | - | - |
| 9 others | 0 | - | - | - | - | - |
| Electorate: 31 Valid: 26 Spoilt: 0 Quota: 13 Turnout: 26 ||||||||||
* ↑ Earl of Albemarle, Earl of Effingham, Lord Glenconner, Lord Hankey, Lord Monson, Lord Mostyn, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Viscount Powerscourt (eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland), and Lord Wigram
* David Armstrong-Jones, 2nd Earl of Snowdon originally announced his candidacy but later withdrew.
After the retirement of the Lord Glentoran:
Conservative hereditary peers' by-election, July 2018 :
| Candidate | Count 1 |
| YLord Bethell | 26 |
| Marquess of Abergavenny | 6 |
| Earl De La Warr | 4 |
| Lord Ashcombe | 2 |
| Lord Napier and Ettrick | 2 |
| Lord Reay | 1 |
| Earl of Stockton | 1 |
| Lord Windlesham | 1 |
| 3 others | 0 |
| Electorate: 47 Valid: 43 Spoilt: 0 Quota: 22 Turnout: 43 |||||
* ↑ Lord Biddulph, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Rowallan
After the retirement of the Lord Northbourne:
Crossbench hereditary peers' by-election, November 2018 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Carrington | 11 | 11 | 11 | 12 | 14 |
| Lord Ravensdale | 8 | 8 | 9 | 9 | 9 |
| Earl of Eldon | 3 | 4 | 4 | 4 | 5 |
| Lord Meston | 2 | 2 | 2 | 3 | - |
| Lord Aldington | 2 | 2 | 2 | - | - |
| Duke of Hamilton and Brandon | 2 | 2 | - | - | - |
| Viscount Powerscourt | 1 | - | - | - | - |
| 4 others | 0 | - | - | - | - |
| Electorate: 31 Valid: 29 Spoilt: 0 Quota: 15 Turnout: 29 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland
* ↑ Earl of Albemarle, Lord Bridges, Earl of Limerick (eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland), and Lord Southampton

### 2019

After the death of the Lord Skelmersdale:
Hereditary peers' by-election (whole House eligible to vote), January 2019 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 |
| | Conservative | YLord Reay | 73 | 73 | 73 | 73 | 74 | 78 | 78 | 81 | 87 | 94 | 110 |
| | Conservative | Earl of Leicester | 46 | 46 | 46 | 46 | 47 | 52 | 53 | 58 | 62 | 74 | 93 |
| | Conservative | Lord Strathcarron | 32 | 32 | 32 | 33 | 37 | 39 | 39 | 41 | 44 | 49 | - |
| | Conservative | Lord Napier and Ettrick | 24 | 24 | 24 | 24 | 25 | 28 | 32 | 36 | 39 | - | - |
| | Conservative | Earl of Carnarvon | 20 | 20 | 20 | 22 | 23 | 24 | 24 | 25 | - | - | - |
| | Conservative | Earl of Stockton | 18 | 18 | 18 | 18 | 19 | 19 | 21 | - | - | - | - |
| | Crossbench | Lord Hampton | 10 | 11 | 15 | 16 | 17 | 17 | - | - | - | - | - |
| | Conservative | Lord Ashcombe | 13 | 13 | 13 | 13 | 15 | - | - | - | - | - | - |
| | Conservative | Lord Windlesham | 12 | 12 | 12 | 12 | - | - | - | - | - | - | - |
| | Crossbench | Earl of Effingham | 5 | 5 | 5 | - | - | - | - | - | - | - | - |
| | Crossbench | Viscount Powerscourt | 4 | 5 | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Mountgarret | 1 | - | - | - | - | - | - | - | - | - | - |
| | Crossbench | Lord Oranmore and Browne | 1 | - | - | - | - | - | - | - | - | - | - |
| | Others | 3 others | 0 | - | - | - | - | - | - | - | - | - | - |
| Electorate: 785 Valid: 259 Spoilt: 0 Quota: 130 Turnout: 259 (33%) |||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Mereworth, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Cadman, and Lord Southampton
After the death of the Viscount Slim:
Crossbench hereditary peers' by-election, March 2019 :
| Candidate | Count 1 |
| YLord Ravensdale | 18 |
| Lord Meston | 4 |
| Earl of Albemarle | 1 |
| Lord Aldington | 1 |
| Lord de Ramsey | 1 |
| Lord Dormer | 1 |
| Lord Glenconner | 1 |
| Lord Hankey | 1 |
| 6 others | 0 |
| Electorate: 31 Valid: 28 Spoilt: 0 Quota: 14 Turnout: 28 |||||
* ↑ Earl of Effingham, Lord Hampton, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Viscount Powerscourt (eligible to stand by virtue of his junior title, Baron Powerscourt, as his senior title is in the Peerage of Ireland), Lord Southampton, and Lord Spens

### 2021

Normally, by-elections must be held within three months of a vacancy occurring, but in response to the COVID-19 pandemic the House resolved in March 2020 to suspend any by-elections. Although this initial suspension was only until 8 September 2020, successive further motions extended this arrangement. Ultimately by-elections resumed in June 2021 with multiple elections held to fill six vacancies.
After the retirements of the Earl of Selborne and the Lord Denham, and the removal for non-attendance of the Lord Selsdon:
Conservative hereditary peers' by-election, June 2021 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 |
| YLord Sandhurst | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| YEarl of Leicester | 7 | 7.3 | 8.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 |
| YLord Altrincham | 6 | 6.3 | 6.3 | 6.3 | 7.3 | 7.6 | 7.6 | 9.6 |
| Lord Harlech | 4 | 4.1 | 4.1 | 4.1 | 4.1 | 5.1 | 7.1 | 7.1 |
| Marquess of Abergavenny | 3 | 3 | 3 | 3 | 3 | 3 | 3 | - |
| Earl De La Warr | 2 | 2 | 2 | 2 | 2 | 2 | - | - |
| Lord Strathcarron | 1 | 1.3 | 1.3 | 1.3 | 1.3 | - | - | - |
| Lord Windlesham | 1 | 1 | 1 | 1 | - | - | - | - |
| Lord Ashcombe | 1 | 1 | 1 | - | - | - | - | - |
| Earl of Carnarvon | 1 | 1 | - | - | - | - | - | - |
| 11 others | 0 | - | - | - | - | - | - | - |
| Electorate: 43 Valid: 36 Spoilt: 0 Quota: 9 Turnout: 36 ||||||||||||
* ↑ Lord Biddulph, Lord Dormer, Earl of Dundonald, Lord Elibank, Earl of Limerick (eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland), Lord Margadale, Viscount Mountgarret (eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland), Lord Napier and Ettrick, Lord Rowallan, Earl of Stockton, and Lord Wrottesley
After the retirement of the Countess of Mar:
Hereditary peers' by-election (whole House eligible to vote), June 2021 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 |
| | Crossbench | YLord Londesborough | 114 | 116 | 116 | 116 | 121 | 129 | 147 |
| | Crossbench | Lord Meston | 66 | 66 | 66 | 67 | 70 | 75 | 80 |
| | Crossbench | Lord Chorley | 32 | 33 | 34 | 35 | 37 | 46 | 50 |
| | Crossbench | Lord de Clifford | 27 | 30 | 32 | 34 | 35 | 38 | - |
| | Crossbench | Lord Hampton | 31 | 31 | 31 | 32 | 34 | - | - |
| | Crossbench | Lord Somerleyton | 18 | 19 | 20 | 20 | - | - | - |
| | Crossbench | Earl of Albemarle | 13 | 13 | 14 | - | - | - | - |
| | Crossbench | Lord Birkett | 8 | 8 | - | - | - | - | - |
| | Crossbench | Lord Milverton | 6 | - | - | - | - | - | - |
| | Crossbench | Earl of Effingham | 2 | - | - | - | - | - | - |
| Electorate: 786 Valid: 317 Spoilt: 0 Quota: 159 Turnout: 317 |||||||||||
After the death of the Lord Rea:
Labour hereditary peers' by-election, July 2021 :
| Candidate | Count 1 |
| YViscount Stansgate | unopposed |
After the retirement of the Lord Elton:
Hereditary peers' by-election (whole House eligible to vote), July 2021 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 |
| | Conservative | YLord Harlech | 67 | 67 | 67 | 68 | 69 | 70 | 71 | 73 | 77 | 84 | 100 |
| | Conservative | Lord Strathcarron | 46 | 47 | 47 | 47 | 47 | 49 | 49 | 50 | 51 | 61 | 69 |
| | Conservative | Earl of Stockton | 31 | 31 | 31 | 32 | 33 | 37 | 38 | 41 | 47 | 59 | - |
| | Conservative | Earl of Carnarvon | 13 | 14 | 14 | 14 | 17 | 17 | 18 | 21 | 24 | - | - |
| | Conservative | Earl De La Warr | 15 | 15 | 15 | 15 | 15 | 15 | 19 | 22 | 22 | - | - |
| | Conservative | Earl of Limerick | 12 | 12 | 13 | 13 | 14 | 15 | 18 | 19 | - | - | - |
| | Conservative | Lord Margadale | 14 | 14 | 15 | 15 | 15 | 15 | 17 | - | - | - | - |
| | Conservative | Lord de Ramsey | 11 | 11 | 11 | 11 | 12 | 14 | - | - | - | - | - |
| | Conservative | Lord Windlesham | 10 | 10 | 10 | 11 | 12 | - | - | - | - | - | - |
| | Conservative | Lord Napier and Ettrick | 7 | 7 | 8 | 9 | - | - | - | - | - | - | - |
| | Conservative | Lord Dormer | 5 | 5 | 5 | - | - | - | - | - | - | - | - |
| | Conservative | Lord Elibank | 4 | 4 | - | - | - | - | - | - | - | - | - |
| | Conservative | Viscount Mountgarret | 2 | - | - | - | - | - | - | - | - | - | - |
| Electorate: over 750 Valid: 237 Spoilt: 0 Quota: 119 Turnout: 237 |||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland
After the death of the Viscount Simon:
Hereditary peers' by-election (whole House eligible to vote), November 2021 :
| Party | Party | Candidate | Count 1 |
| | Labour | YLord Hacking | 159 |
| | Labour | Lord Kennet | 82 |
| | Conservative | Lord Biddulph | 23 |
| Electorate: 783 Valid: 264 Spoilt: 0 Quota: 132 Turnout: 264 |||||

### 2022

After the retirement of the Viscount Ridley:
Conservative hereditary peers' by-election, February 2022 :
| Candidate | Count 1 | Count 2 |
| YLord Strathcarron | 17 | 18 |
| Viscount Camrose | 6 | 6 |
| Lord Ashcombe | 5 | 5 |
| Earl of Limerick | 3 | 4 |
| Earl De La Warr | 3 | 3 |
| Viscount Monckton of Brenchley | 1 | - |
| Lord Windlesham | 1 | - |
| 3 others | 0 | - |
| Electorate: 45 Valid: 36 Spoilt: 0 Quota: 18 Turnout: 36 ||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Biddulph, Lord Dormer, and Earl of Dudley
After the retirement of the Lord Rotherwick:
Conservative hereditary peers' by-election, March 2022 :
| Candidate | Count 1 |
| YViscount Camrose | 20 |
| Lord Ashcombe | 12 |
| Earl of Limerick | 3 |
| Lord Napier and Ettrick | 1 |
| Lord Windlesham | 1 |
| 4 others | 0 |
| Electorate: 46 Valid: 37 Spoilt: 0 Quota: 19 Turnout: 37 |||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Baillieu, Lord Biddulph, Lord Ironside, and Lord Rowallan
After the retirement of the Lord Brabazon of Tara, and the death of the Lord Swinfen:
Conservative hereditary peers' by-election, July 2022 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| YLord Remnant | 22 | 13.67 | 13.67 | 13.67 | 13.67 |
| YLord Wrottesley | 5 | 7.59 | 7.59 | 8.59 | 12.33 |
| Lord Ashcombe | 7 | 9.96 | 9.96 | 9.96 | 12.07 |
| Earl of Limerick | 1 | 2.85 | 2.85 | 2.85 | - |
| Lord Ashbourne | 2 | 2.37 | 2.37 | 2.37 | - |
| Earl of Balfour | 1 | 1.37 | 1.37 | 1.37 | - |
| Lord Dormer | 1 | 1 | 1 | 1 | - |
| Lord Windlesham | 1 | 1 | 1 | 1 | - |
| Lord Elibank | 1 | 1 | 1 | - | - |
| 3 others | 0 | - | - | - | - |
| Electorate: 45 Valid: 41 Spoilt: 0 Quota: 13.66 Turnout: 41 |||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Baillieu, Lord Biddulph, and Earl of Dudley
After the retirements of the Viscount Ullswater, and the Lord Colwyn:
Hereditary peers' by-election (whole House eligible to vote), October 2022 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 | Count 10 | Count 11 | Count 12 | Count 13 | Count 14 | Count 15 | Count 16 | Count 17 |
| | Conservative | YLord Roborough | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 38 | 38 | 39 | 45 | 46 | 58 |
| | Conservative | YEarl of Minto | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 34 | 35 | 38 | 42 | 44 | 51 |
| | Conservative | Lord Hazlerigg | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 24 | 24 | 24 | 25 | 27 | 29 | 32 | 36 |
| | Conservative | Lord Ashcombe | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 21 | 21 | 21 | 21 | 21 | 22 | 26 | 28 | - |
| | Conservative | Lord Windlesham | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 17 | 18 | 21 | 22 | 22 | - | - |
| | Conservative | Earl of Effingham | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | 18 | 21 | - | - | - |
| | Conservative | Lord Rossmore | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 17 | - | - | - | - |
| | Conservative | Lord Baillieu | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 12 | - | - | - | - | - |
| | Conservative | Earl of Balfour | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | - | - | - | - | - | - |
| | Conservative | Earl of Limerick | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | - | - | - | - | - | - | - |
| | Conservative | Marquess of Bristol | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | - | - | - | - | - | - | - | - |
| | Conservative | Marquess of Abergavenny | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | - | - | - | - | - | - | - | - | - |
| | Independent | Earl of Dudley | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Ashbourne | 3 | 3 | 3 | 3 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Rowallan | 2 | 2 | 2 | 2 | 3 | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Napier and Ettrick | 2 | 2 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Dormer | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Ironside | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Conservative | Lord Elibank | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | Others | 2 others | 0 | - | - | - | - | - | - | - | - | - | - |
| Electorate: 757 Valid: 190 Spoilt: 0 Quota: 48.3 Turnout: 190 |||||||||||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Earl of Eglinton and Winton and Lord Glendyne
After the retirement of the Earl of Listowel:
Crossbench hereditary peers' by-election, October 2022 :
| Candidate | Count 1 | Count 2 |
| YLord Hampton | 9 | 11 |
| Lord Meston | 7 | 10 |
| Viscount Norwich | 2 | - |
| Viscount Rochdale | 2 | - |
| Lord de Clifford | 1 | - |
| Lord Walpole | 1 | - |
| 4 others | 0 | - |
| Electorate: 30 Valid: 22 Spoilt: 0 Quota: 11 Turnout: 22 ||||||
* ↑ Earl of Albemarle, Lord Braybrooke, Earl of Dudley, and Lord Monson
After the retirement of the Lord Astor of Hever, and the death of the Earl of Home:
Conservative hereditary peers' by-election, October 2022 :
| Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 |
| YEarl of Effingham | 6 | 8 | 9 | 9 | 15 | 12 |
| YLord Ashcombe | 10 | 10 | 10 | 10 | 11 | 14 |
| Lord Hazlerigg | 8 | 8 | 8 | 9 | 10 | 10 |
| Marquess of Abergavenny | 4 | 4 | 4 | 5 | - | - |
| Marquess of Bristol | 3 | 3 | 4 | 4 | - | - |
| Earl of Limerick | 2 | 2 | 2 | - | - | - |
| Earl of Eglinton and Winton | 2 | 2 | - | - | - | - |
| Lord Rossmore | 1 | - | - | - | - | - |
| Lord Windlesham | 1 | - | - | - | - | - |
| 11 others | 0 | - | - | - | - | - |
| Electorate: 41 Valid: 37 Spoilt: 0 Quota: 12 Turnout: 37 ||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Foxford, as his senior title is in the Peerage of Ireland
* ↑ Lord Ashbourne, Lord Baillieu, Earl of Balfour, Lord Biddulph, Lord Dormer, Earl of Dudley, Lord Elibank, Lord Glendyne, Lord Ironside, Lord Napier and Ettrick, and Lord Rowallan
* The Earl of Minto and Lord Roborough initially announced their candidacies, but subsequently were elected at a by-election earlier the same week.

### 2023

After the retirement of the Viscount Falkland:
Hereditary peers' by-election (whole House eligible to vote), June 2023 :
| Party | Party | Candidate | Count 1 |
| | Liberal Democrats | YEarl Russell | 123 |
| | Liberal Democrats | Earl Lloyd-George of Dwyfor | 55 |
| | Liberal Democrats | Lord Belhaven and Stenton | 34 |
| Electorate: over 750 Valid: 212 Spoilt: 0 Quota: 106 Turnout: 212 |||||
After the death of the Lord Palmer and the retirement of the Lord Hylton:
Crossbench hereditary peers' by-election, September 2023 :
| Candidate | Count 1 | Count 2 | Count 3 |
| YLord Meston | 11 | 7.67 | 7.67 |
| YLord de Clifford | 5 | 6.5 | 9.5 |
| Lord Chorley | 4 | 4.9 | 4.9 |
| Viscount Rochdale | 0 | 0.6 | 0.6 |
| Lord Braybrooke | 2 | 2.3 | 0.3 |
| Lord Aldington | 1 | 1 | - |
| 7 others | 0 | - | - |
| Electorate: 32 Valid: 23 Spoilt: 0 Quota: 7.67 Turnout: 23 |||||||
* ↑ Earl of Albemarle, Earl of Carnarvon, Earl Erne (Eligible to stand by virtue of his junior title, Baron Fermanagh, as his senior title is in the Peerage of Ireland), Lord Sempill, Lord Somerleyton, Lord Southampton, Lord Walpole
After the death of the Lord Brougham and Vaux:
Hereditary peers' by-election (whole House eligible to vote), November 2023 :
| Party | Party | Candidate | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 | Count 6 | Count 7 | Count 8 | Count 9 |
| | Conservative | YLord Camoys | 97 | 97 | 97 | 97 | 99 | 102 | 104 | 117 | 133 |
| | Conservative | Marquess of Bristol | 39 | 39 | 39 | 40 | 40 | 41 | 42 | 46 | 52 |
| | Conservative | Lord Hamilton of Dalzell | 34 | 34 | 34 | 35 | 35 | 37 | 37 | 45 | 51 |
| | Conservative | Lord Rossmore | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 43 | - |
| | Conservative | Lord Hazlerigg | 13 | 13 | 13 | 14 | 14 | 15 | 16 | - | - |
| | Conservative | Earl of Eglinton and Winton | 8 | 8 | 9 | 9 | 9 | 9 | 10 | - | - |
| | Conservative | Lord Annaly | 7 | 7 | 7 | 7 | 7 | 7 | 8 | - | - |
| | Conservative | Lord Baillieu | 6 | 7 | 7 | 7 | 7 | 7 | - | - | - |
| | Conservative | Viscount Falmouth | 6 | 6 | 6 | 6 | 7 | - | - | - | - |
| | Conservative | Lord Windlesham | 4 | 4 | 5 | 5 | - | - | - | - | - |
| | Conservative | Viscount Mountgarret | 3 | 3 | 3 | - | - | - | - | - | - |
| | Conservative | Lord Ashbourne | 3 | 3 | - | - | - | - | - | - | - |
| | Conservative | Lord Elibank | 1 | - | - | - | - | - | - | - | - |
| | Conservative | Lord Napier and Ettrick | 1 | - | - | - | - | - | - | - | - |
| Electorate: over 750 Valid: 259 Spoilt: 0 Quota: 130 Turnout: 259 |||||||||||||
* ↑ Eligible to stand by virtue of his junior title, Baron Mountgarret, as his senior title is in the Peerage of Ireland

## Current vacancies

The Earl of Sandwich, one of the 28 elected crossbench hereditary peers, retired from the House on 20 May 2024.
The Lord Willoughby de Broke, a non-affiliated peer who was originally elected as one of the 42 Conservative hereditary peers, ceased to be a member of the House on 9 July 2024 due to non-attendance.
Ordinarily, by-elections to fill vancancies would have been required within three months. However, on 25 July 2024, and in anticipation of imminent legislative debates on the abolition of the right of Hereditary Peers to sit in the Lords (see proposed abolition below), and reflecting views that "ongoing by-elections during the parliamentary consideration of a Bill would be deeply undesirable in this context", the House of Lords passed a motion to extend the deadline for holding a by-election to 18 months.

## Proposed abolition

In six parliamentary sessions between the years 2016 and 2024, Labour peer Lord Grocott sponsored a private member's bill to abolish by-elections, this would have resulted in vacancies not being filled and the number of hereditary peers in the House of Lords diminishing over time. Labour MP John Spellar sponsored a similar private member's bill in three parliamentary sessions between the years 2021 and 2024.
In September 2024 the newly-elected Labour government introduced the House of Lords (Hereditary Peers) Bill. If enacted this would remove the right of the remaining hereditary peers to sit and vote in the House of Lords.

## Historical by-elections of Scottish and Irish representative peers

From the 1707 Act of Union to the passing of the Peerage Act 1963, peers in the Peerage of Scotland elected sixteen representative peers to sit in the House of Lords. Unlike Irish peers, however, Scottish representative peers only sat for the duration of one parliament before facing re-election. By-elections were held in the Palace of Holyroodhouse to replace deceased peers. After the passing of the Peerage Act 1963, all Scottish peers were entitled to sit in the House of Lords and the election procedure was abolished.
The last Scottish representative peer by-election took place in 1959, when the Duke of Atholl was elected in place of the late Lord Sinclair.
Also, from the 1801 Act of Union to Irish independence, 28 Irish representative peers were elected from and by the Peerage of Ireland to sit in the British House of Lords. Like current hereditary peers, these representative peers sat for life terms and deceased peers were replaced in by-elections. Unlike modern hereditary peer by-elections, all peers in the Peerage of Ireland, even those who did not sit in the House of Lords, were entitled to vote. Upon the creation of the Irish Free State, the offices required to officiate these by-elections were abolished and thus no more were held, but those peers already elected kept their seats for the remainder of their lives. The last to sit in the Lords was Francis Needham, 4th Earl of Kilmorey, who died in 1961.