He says to the Sovereign: "I no longer am leader of the majority party in the House of Commons; but I am carrying on as your Prime Minister." Now I don't think anyone can say that—at least without inflicting damage on the constitution... [it is] tantamount to treating the monarch herself with disrespect and denying the very principle on which our parliamentary democracy is founded.
On John Major's decision to resign as party leader in order to contest a leadership election (The Daily Mail, 27 June, 1995).