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| 8.0 | Next Conservative Party leader to not be currently in House of Commons | | | | | | | | Next Conservative Party leader to not be currently in House of Commons | | | | | | | | | | 7 | | | | | | | | | | | | | |
| 11.0 | Next Labour Party leader to not be currently in House of Commons | | | | | | | | Next Labour Party leader to not be currently in House of Commons | | | | | | | | | | 10 | | | | | | | | | | | | | |
| 19.0 | Next Liberal Democrat Party leader to not be currently in House of Commons | | | | | | | | Next Liberal Democrat Party leader to not be currently in House of Commons | | | | | | | | | | 18 | | | | | | | | | | | | | |