Commentary
The ability of an MP to cross the floor to another political party is an intrinsic and important element of the Westminster parliamentary system, even though it infuriates supporters of the spurned party when a crossing occurs.
Winston Churchill famously crossed the floor twice. Once from the Conservatives to the Liberals, and then back from the Liberals to the Conservatives. His leadership and force of personality made him one of the most revered Western leaders in modern history, despite the crossings. Most floor crossers don’t have such strength, and in changing parties they often bring about the end of their political careers….