The county of Northumberland is divided into 4 parliamentary constituencies – 1 borough constituencies and 3 county constituencies.

  † Conservative  ‡ Labour

More information Constituency, Electorate ...

Constituency[nb 1]	Electorate[1]	Majority[2][nb 2]	Member of Parliament[2]		Nearest opposition[2]		Electoral wards[3][4]	Map
Berwick-upon-Tweed CC	59,939	14,835		Anne-Marie Trevelyan†		Trish Williams‡	Alnwick District Council: Alnmouth and Lesbury, Alnwick Castle, Alnwick Clayport, Alnwick Hotspur, Amble Central, Amble East, Amble West, Embleton, Harbottle and Elsdon, Hedgeley, Longframlington, Longhoughton with Craster and Rennington, Rothbury and South Rural, Shilbottle, Warkworth, Whittingham. Berwick-upon-Tweed Borough Council: Bamburgh, Beadnell, Belford, Cheviot, Edward, Elizabeth, Flodden, Ford, Islandshire, Lowick, Norhamshire, North Sunderland, Prior, Seton, Shielfield, Spittal, Wooler. Castle Morpeth Borough Council: Chevington, Ellington, Hartburn, Longhorsley, Lynemouth, Ulgham.
Blyth Valley BC	64,429	712		Ian Levy†		Susan Dungworth‡	Northumberland County Council: Cowpen, Cramlington East, Cramlington Eastfield with East Hartford, Cramlington North, Cramlington Parkside, Cramlington South East, Cramlington Village, Cramlington West, Croft, Hartley, Holywell, Isabella, Kitty Brewster, Newsham and New Delaval, Plessey, Seaton Delaval, Seghill, South Beach, South Newsham, Wensleydale.
Hexham CC	61,324	10,549		Guy Opperman†		Penny Grennan‡	Castle Morpeth Borough Council: Heddon-on-the-Wall, Ponteland East, Ponteland North, Ponteland South, Ponteland West, Stamfordham, Stannington. Northumberland County Council: Acomb, Allendale, Bellingham, Broomhaugh and Riding, Chollerton with Whittington, Corbridge, East Tynedale, Hadrian, Haltwhistle, Haydon, Hexham Gilesgate, Hexham Hencotes, Hexham Leazes, Hexham Priestpopple, Humshaugh and Wall, Ovingham, Prudhoe Castle, Prudhoe North, Prudhoe South, Prudhoe West, Redesdale, Sandhoe with Dilston, Slaley and Hexhamshire, South Tynedale, Stocksfield with Mickley, Upper North Tyne, Wanney, Warden and Newbrough, Wark, West Tynedale, Wylam.
Wansbeck CC	63,339	814		Ian Lavery‡		Jack Gebhard†	Castle Morpeth Borough Council: Hebron, Hepscott and Mitford, Morpeth Central, Morpeth Kirkhill, Morpeth North, Morpeth South, Morpeth Stobhill, Pegswood. Northumberland County Council: Bedlington Central, Bedlington East, Bedlington West, Bothal, Ashington, Central, Choppington, College, Guide Post, Haydon, Hirst, Newbiggin East, Newbiggin West, Park, Seaton, Sleekburn, Stakeford.

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Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to retain Northumberland's constituencies for the 2010 election, making a very small change between Berwick-upon-Tweed and Hexham to realign constituency boundaries with the boundaries of current local government wards.

See 2023 Periodic Review of Westminster constituencies for further details.

Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for England formally launched the 2023 Review on 5 January 2021.^[5] Initial proposals were published on 8 June 2021 and, following two periods of public consultation, revised proposals were published on 8 November 2022. The final proposals were published on 28 June 2023.

The commission has proposed that Northumberland be combined with the Tyne and Wear boroughs of Newcastle upon Tyne and North Tyneside as a sub-region of the North East Region, with the creation of two cross-county boundary constituencies, resulting in the abolition of Berwick-upon-Tweed, Blyth Valley and Wansbeck.^{[6] [7]}

The following seats are proposed in Northumberland:

• Blyth and Ashington
• Cramlington and Killingworth (parts also in Newcastle upon Tyne and North Tyneside)
• Hexham (part in Newcastle upon Tyne)
• North Northumberland

Primary data source: House of Commons research briefing - General election results from 1918 to 2019^[8]

2019

The number of votes cast for each political party who fielded candidates in constituencies comprising Northumberland in the 2019 general election were as follows:

More information Party, Votes ...

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	82,849	48.8%	4.4%	3	1
Labour	57,567	33.9%	8.9%	1	1
Liberal Democrats	17,018	10.0%	0.7%	0	0
Brexit	6,535	3.9%	new	0	0
Greens	5,480	3.2%	1.1%	0	0
Others	178	0.2%	1.2%	0	0
Total	169,627	100.0		4

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A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

• List of parliamentary constituencies in the North East (region)
• History of parliamentary constituencies and boundaries in Northumberland