Voting: 07-05-2015
- Above and Beyond (3 elections)
- Above and Beyond Party (2 elections)
- Alliance (18 elections)
- Alliance for Green Socialism (4 elections)
- All People's Party (4 elections)
- Alter Change (1 election)
- Al-Zebabist Nation of Ooog (1 election)
- Animal Welfare (4 elections)
- An Independence from Europe (5 elections)
- Apni (1 election)
- Apolitical Democrats (1 election)
- Beer, Baccy and Scratchings (1 election)
- Birthday (1 election)
- BNP (8 elections)
- British Democratic (1 election)
- British Independents (1 election)
- Campaign (1 election)
- Children of the Atom (1 election)
- Christian (7 elections)
- Christian Movement for Great Britain (1 election)
- Christian Peoples (17 elections)
- CISTA (32 elections)
- Class War (7 elections)
- Common Sense Party (1 election)
- Communist (9 elections)
- Communist League (2 elections)
- Communities United (5 elections)
- Consensus - The Community Party (1 election)
- Conservative (631 elections)
- Democratic (1 election)
- Democratic Reform (1 election)
- Digital Democracy (1 election)
- DUP (16 elections)
- English Democrats (32 elections)
- Europeans Party (1 election)
- Free Public Transport (1 election)
- Free United Kingdom Party (1 election)
- Give Me Back Elmo (1 election)
- Greens (537 elections)
- Greens (NI) (5 elections)
- Guildford Greenbelt Group (1 election)
- Hoi Polloi (1 election)
- Humanity (1 election)
- Independent (172 elections)
- Islam Zinda Baad Platform (1 election)
- Justice and Anti-Corruption Party (1 election)
- Justice for Men and Boys (2 elections)
- Keep It Real Party (1 election)
- Labour (603 elections)
- Labour Co-op (28 elections)
- Land Party (1 election)
- Left Unity (4 elections)
- Lewisham People Before Profit (2 elections)
- Liberal (4 elections)
- Liberal Democrats (630 elections)
- Liberty (3 elections)
- Lincolnshire Independents (5 elections)
- Magna Carta (1 election)
- Magna Carta Conservation Party Great Britain (1 election)
- Mainstream (1 election)
- Maston Airport Independent (1 election)
- Mebyon Kernow (6 elections)
- Monster Raving Loony (16 elections)
- Movement for Active Democracy (1 election)
- National Front (7 elections)
- National Health Action (12 elections)
- National Liberal Party (2 elections)
- New Independent Centralists (1 election)
- New Millenium Bean Party (1 election)
- NI Conservatives (16 elections)
- North East Party (4 elections)
- Northern (4 elections)
- Party for a United Thanet (1 election)
- Patria (2 elections)
- Patriotic Socialist (1 election)
- Patriotic Socialist Party (1 election)
- Peace (4 elections)
- People Before Profit (1 election)
- People First (1 election)
- Pirate (6 elections)
- Plaid Cymru (40 elections)
- Population Party UK (1 election)
- Principles of Politics (1 election)
- Progressive Democracy (1 election)
- Putting Croydon First! (1 election)
- Rebooting Democracy (1 election)
- Red Flag Anti-Corruption (2 elections)
- Reduce VAT in Sport (1 election)
- Republican Socialist Party (1 election)
- Residents for Uttlesford (1 election)
- Respect (4 elections)
- Restore the Family (1 election)
- Rochdale First (1 election)
- Roman (1 election)
- Save Hartlepool Hospital (1 election)
- Scottish Christian (2 elections)
- Scottish Greens (31 elections)
- Scottish Socialist (4 elections)
- SDLP (18 elections)
- Sinn Féin (18 elections)
- SNP (59 elections)
- Social Democratic (2 elections)
- Socialist Equality (2 elections)
- Socialist (GB) (10 elections)
- Socialist Labour (8 elections)
- Something New (2 elections)
- Southport Party (1 election)
- Speaker (1 election)
- Sustainable Population (1 election)
- The 30-50 Coalition (1 election)
- The Eccentric Party of Great Britain (UK) (1 election)
- The Evolution Party (1 election)
- The New Society of Worth (1 election)
- The Party for Poole People Ltd. (1 election)
- The Pilgrim Party (1 election)
- The Pluralist Party (1 election)
- The Realists' Party (1 election)
- The Ubuntu Party (2 elections)
- TUSC (133 elections)
- TUV (7 elections)
- UKIP (623 elections)
- U Party (1 election)
- UUP (15 elections)
- Vapers in Power (2 elections)
- We are the Reality Party (3 elections)
- Wessex Regionalist (1 election)
- Whig (4 elections)
- Wigan Independents (1 election)
- Workers' Party (5 elections)
- Workers Revolutionary (7 elections)
- World Peace Through Song (1 election)
- Yorkshire First (14 elections)
- Young Peoples' Party (2 elections)