Prolonged periods of Tory rule have a habit of ending in a tide of sleaze and scandal. John Major gained the largest Tory vote in history in 1992, but his party was brought to a historic low five years later, with their worst election result in 90 years.
A similar set of circumstances faced the Tories in 1964, after what Labour Party leader Harold Wilson famously called “thirteen years of Tory misrule”. On that occasion the most infamous scandal besetting them was “the Profumo Affair”. Today we are in a third long period of continuous Tory rule (from 2010), so BBC’s The Trial of Christine