members of two opposing political parties or factions in England, particularly during the 18th century. Originally “Whig” and “Tory” were terms of abuse introduced in 1679 during the heated struggle over the bill to exclude James, duke of York (afterward James II), from the succession. Whig—whatever its origin in Scottish Gaelic—was a term applied to horse thieves and, later, to Scottish Presbyterians; it connoted nonconformity and rebellion and was applied to those who claimed the power of excluding the heir from the throne. Tory was an Irish term suggesting a papist outlaw and was applied to those who supported the hereditary right of James despite his Roman Catholic faith.

The Glorious Revolution (1688–89) greatly modified the division in principle between the two parties, for it had been a joint achievement. Thereafter most Tories accepted something of the Whig doctrines of limited constitutional monarchy rather than divine-right absolutism. Under Queen Anne, the Tories represented the resistance, mainly by the country gentry, to religious toleration and foreign entanglements. Toryism became identified with Anglicanism and the squirearchy and Whiggism with the aristocratic, landowning families and the financial interests of the wealthy middle classes.

The death of Anne in 1714, the manner in which George I came to the throne as a nominee of the Whigs, and the flight (1715) of the Tory leader Henry St. John, 1st Viscount Bolingbroke, to France, conspired to destroy the political power of the Tories as a party.

For nearly 50 years thereafter, rule was by aristocratic groups and connections, regarding themselves as Whigs by sentiment and tradition. The die-hard Tories were discredited as Jacobites (Jacobite), seeking the restoration of the Stuart heirs to the throne, though about 100 country gentlemen, regarding themselves as Tories, remained members of the House of Commons throughout the years of the Whig hegemony. As individuals and at the level of local politics, administration, and influence, such “Tories” remained of considerable importance.

The reign of George III (1760–1820) brought a shift of meanings to the two words. No Whig Party as such existed at the time, only a series of aristocratic groups and family connections operating in Parliament through patronage and influence. Nor was there a Tory Party, only Tory sentiment, tradition, and temperament surviving among certain families and social groups. The so-called King's Friends, from whom George III preferred to draw his ministers (especially under Lord North 【afterward 2nd earl of Guilford】, 1770–82), came from both traditions and from neither. Real party alignments began to take shape only after 1784, when profound political issues that deeply stirred public opinion were arising, such as the controversy over the American Revolution.

After 1784 William Pitt (Pitt, William, The Younger) the Younger emerged as the leader of a new Tory Party, which broadly represented the interests of the country gentry, the merchant classes, and official administerial groups. In opposition, a revived Whig Party, led by Charles James Fox (Fox, Charles James), came to represent the interests of religious dissenters, industrialists, and others who sought electoral, parliamentary, and philanthropic reforms.

The French Revolution and the wars against France soon further complicated the division between parties. A large section of the more moderate Whigs deserted Fox and supported Pitt. After 1815 and a period of party confusion, there eventually emerged the conservatism of Sir Robert Peel (Peel, Sir Robert, 2nd Baronet) and Benjamin Disraeli (Disraeli, Benjamin, Earl Of Beaconsfield, Viscount Hughenden Of Hughenden), earl of Beaconsfield, and the liberalism of Lord John Russell (Russell, John Russell, 1st Earl, Viscount Amberley Of Amberley And Of Ardsalla) and William Ewart Gladstone (Gladstone, William Ewart), with the party labels of Conservative and Liberal assumed by each faction, respectively. Although the label Tory has continued to be used to designate the Conservative Party, Whig has ceased to have much political meaning.