| Years | Leader | % Correct |
|---|---|---|
| 2019- | Boris Johnson | 96%
|
| 2005-16 | David Cameron | 95%
|
| 2016-19 | Theresa May | 95%
|
| 1990-97 | John Major | 91%
|
| 1975-90 | Margaret Thatcher | 89%
|
| 1940-55 | Winston Churchill | 89%
|
| 1937-40 | Neville Chamberlain | 72%
|
| 1965-75 | Edward Heath | 71%
|
| 1955-57 | Anthony Eden | 66%
|
| 1997-2001 | William Hague | 66%
|
| 2001-03 | Iain Duncan Smith | 63%
|
| 1957-63 | Harold Macmillan | 62%
|
| 1963-65 | Alec Douglas-Home | 61%
|
| 1921-22 (House of Commons) | Austen Chamberlain | 60%
|
| 1868-81 | Benjamin Disraeli, 1st Earl of Beaconsfield | 57%
|
| 1923-37 | Stanley Baldwin | 57%
|
| 1846-68 | Edward Smith-Stanley, 14th Earl of Derby | 52%
|
| 2003-05 | Michael Howard | 48%
|
| 1911-16 (House of Commons) | Andrew Bonar Law | 46%
|
| 1916-21 | Andrew Bonar Law | 46%
|
| 1922-23 | Andrew Bonar Law | 46%
|
| 1934-46 | Sir Robert Peel | 45%
|
| 1881-85 (House of Lords) | Robert Gascoyne-Cecil, 3rd Marquess of Salisbury | 34%
|
| 1902-11 | Arthur Balfour | 33%
|
| 1885-1902 | Robert Gascoyne-Cecil, 3rd Marquess of Salisbury | 32%
|
| 1921-22 (House of Lords) | George Curzon, 1st Marquess Curzon of Kedleston | 4%
|
| 1911-16 (House of Lords) | Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne | 1%
|
| 1881-85 (House of Commons) | Stafford Northcote, 1st Earl of Iddesleigh | 1%
|