Caernarfon is a parliamentary constituency represented in the House of Commons of the Parliament of the United Kingdom. Originally known as Caernarvon Boroughs, it is named after Caernarfon, the main town within the constituency. Its most famous member was David Lloyd George, who was MP for 55 years. When Lloyd George became prime minister in 1916 it became the first Welsh constituency to be represented by a serving prime minister.
Plaid Cymru have held the seat continuously since 1974, longer than they have held any other seat.

Boundaries

1660 – 1661: William Glynne
1661 – 1679: William Griffith
1679 – 1685: Thomas Mostyn
1685 – 1689: John Griffith
1689 – 1698: Sir Robert Owen
1698 – 1705: Sir John Wynn, 5th Baronet
1705 – 1708: Thomas Bulkeley
1708 – 1713: William Griffith
1713 – 1749: Sir Thomas Wynn
1749 – 1754: Sir William Wynn
1754 – 1761: Robert Wynne
1761 – 1768: Sir John Wynn
1768 – 1790: Glyn Wynn
1790 – 1796: Henry William Paget
1796 – 1806: Edward Paget
1806 – 1826: Charles Paget
1826 – 1830: Lord William Paget
1830 – 1831: William Ormsby-Gore
1831 – 1833: Sir Charles Paget, Liberal
1833 – 1833: Owen Jones Ellis Nanney, Conservative
1833 – 1835: Sir Charles Paget, Liberal
1835 – 1837: Love Parry Jones Parry, Liberal
1837 – 1859: William Bulkeley Hughes, Conservative
1859 – 1865: Charles Wynne, Conservative
1865 – 1882: William Bulkeley Hughes, Liberal
1882 – 1886: Love Jones-Parry, Liberal
1886 – 1890: Edmund Swetenham, Conservative
1890 – 1945: David Lloyd George, Liberal
1945 – 1945: Seaborne Davies, Liberal
1945 – 1950: David Price-White, Conservative
1950 – 1974: Goronwy Roberts, Labour
1974 – 2001: Dafydd Wigley, Plaid Cymru
2001 – present: Hywel Williams, Plaid Cymru Members of Parliament

Elections

Elections in the 2000s

Elections in the 1940s

Elections in the 1930s
In the 1922 UK general election, David Lloyd George, National Liberal was elected unopposed.

Elections in the 1910s

Elections in the 1900s

Elections in the 1880s

List of Parliamentary constituencies in Gwynedd