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Research report library

Electoral registration research

We have produced a number of research reports looking into various issues around electoral registration. These are below.

For visualisations and analysis of this information, please visit the Electoral Registration research page.

Performance standards data and reports are available in our Performance standards section.

Click to see all Electoral registration reports

Electoral register reports

Report title Dataset

Register (date of publication)

Date of publication

Analysis of the December 2016 electoral registers in the United Kingdom (PDF)

2016 Electoral registration data (XLS) December 2016 March 2017

Completeness and accuracy reports

Great Britain and Northern Ireland have two different electoral registration systems and studies have therefore been conducted separately.

Report title Area covered

Register (date of publication)

Date of publication
The December 2015 electoral register in Northern Ireland (PDF) Northern Ireland December 2015 September 2016

The December 2015 electoral registers in Great Britain (PDF)

Appendices (PDF)

Country factsheets

Read our factsheets on the December 2015 electoral registers in:

Great Britain December 2015 July 2016
The quality of the 2014 electoral registers in Great Britain (PDF) Great Britain February/March 2014 July 2014
Electoral registration in 2011 in Great Britain (PDF) Great Britain December 2010/April 2011 July 2014
Continuous electoral registration in Northern Ireland (PDF) Northern Ireland April 2012 November 2012
Great Britain's electoral registers (PDF) Great Britain April 2011 December 2011
The completeness and accuracy of electoral registers in Great Britain (PDF) Great Britain December 2009 March 2010
Electoral registration in Northern Ireland: accuracy and comprehensiveness (PDF) Northern Ireland December 2007 September 2008
Understanding electoral registration in England and Wales (PDF) England & Wales December 2000 September 2005

Individual Electoral Registration (IER)

As part of our role, we monitored the transition to the new system of Individual Electoral Registration (IER) throughout its different stages.  Below are our reports published during the transition.

Find out more about our plan for monitoring IER (PDF)

Report titleDataset Date of publication
Assessment of December 2015 electoral registers in Great Britain (PDF) 

Management Information - IER Monitoring data (XLS)

Electoral statistics 2015 (from Office for National Statistics)

February 2016 
Assessment of progress with the transition to Individual Electoral Registration: May 2015 electoral registers in Great Britain (PDF)May 2015 electoral registers data (XLS)  June 2015
Analysis of the March 2015 registers in Scotland (PDF)Electoral statistics 2014 (from Office for National Statistics) April 2015
Analysis of the December 2014 registers in England and Wales (PDF) February 2015
Confirmation Live Run 2014 (CLR) in Scotland: report and analysis (PDF)

Local authority and ward level results (Zip File - XLS and CSV)

Map of results by local authority

Map of results by parliamentary constituency

November 2014
Confirmation Live Run 2014 (CLR) in England and Wales: report and analysis (PDF) October 2014

Forms and letters testing

We also conducted qualitative research and user-testing on forms, materials and letters that have been used during the transition to IER.


Data matching evaluations

Confirmation dry-run 2013

This paper presents the results of the confirmation dry run (CDR) and its implications for the introduction of IER.


Pilot Evaluation Reports

We are statutorily required to evaluate pilot schemes that test data matching between the electoral registers and other national databases.


Public opinion research

Winter tracker research

Once a year, we conduct a UK-wide survey to find out the public's views on electoral issues such as the voting and registration process, party finance and electoral fraud.

See our Winter Tracker page for our latest headline findings

The most recent surveys are available below. The 2012, 2013 and 2014 research also included a black and minority ethnic (BME) groups boost element.


Post-election surveys

We also conduct  public opinion surveys following elections

See our post-election survey page for our latest headline findings

Post-election surveys reports and data

Date Election/Referendum Report Data Tables
June 2017 UK Parliament general election Report (PDF)Data tables (PDF)
May 2017

Local and Combined Authority Mayoral elections in England

To be published in November 2017.
May 2017

Welsh Local government elections

Report (PDF)Data tables (PDF)
May 2017 Scottish Local government elections Report (PDF)Data tables (PDF)

March 2017

Northern Ireland Assembly elections

Report (charts - PDF)

Reports (data - PDF)

Data tables (PDF)

Data tables (Excel)

June 2016

Referendum on the UK's membership of the European Union

Report (PDF)

Technical report (PDF)

Data tables UK (PDF)

Data tables (individual nations) - (Zip file)

May 2016

Local and mayoral elections in England

Report (PDF)

Data tables (PDF)

May 2016

London Mayor and GLA elections

Report (PDF)

Data tables (PDF)

May 2016

Police and Crime Commissioner elections

Report (PDF)

Data tables (PDF)

May 2016

National Assembly for Wales elections

Report (PDF)

Data tables (PDF)

May 2016

Northern Ireland Assembly elections

Report (PDF)

Data tables (PDF)

May 2016

Scottish Parliament elections

Report (PDF)

Data tables (PDF)

Data tables 16/17 year olds boost (PDF)

May 2016

Aggregated results for the UK overall (results for individual elections available above)

Report (PDF)

Technical report (PDF)

Data tables (PDF)

May 2015

UK Parliament general election

Report (PDF)

Data tables (PDF)

May 2015

Local and mayoral elections in England

Report (PDF)

Data tables (PDF)

September 2014

Scottish Independence Referendum

Report (PDF)

Data tables (PDF)

May 2014

English local government elections

Elections to the European Parliament

May 2014 elections - Report (PDF)

May 2014 elections - Topline findings (PDF)

Data tables (PDF)

May 2013

English local government elections

Welsh local government elections (Anglesey)

May 2013 elections - Report (PDF)

Data tables (PDF)

November 2012

PCC elections

Report (PDF)

Data tables (PDF)

Data tables excluding Bristol and Hartlepool (PDF)

May 2012

English Local government elections

Report (DOC)

Data tables (PDF)

May 2012

Scottish Local government elections

Report (DOC)

Data tables (PDF)

May 2012

Welsh Local government elections

Report (DOC)

Data tables (PDF)

May 2012

London Mayoral election

Report (DOC)

Data tables (PDF)

May 2012

Mayoral referendums

Report (DOC)

Data tables (PDF)

May 2011

English local government elections

National Assembly for Wales elections

Scottish Parliament elections

Northern Ireland Assembly elections

May 2011 elections  – Report (PDF)

Toplines (PDF)

Not available

May 2010

UK Parliament general election

English local government elections

May 2010 elections– Report (PDF)

 Not available

June 2009

English local government elections

Elections to the European Parliament

June 2009 elections - Report (PDF)

 Not available

Electoral data

We collect electoral data after all elections and referendums.

The data covers a range of areas including electorates, turnout, rejected ballot papers and postal voting figures.

Election results can be found on our Election results page.

Electoral data and corresponding reports

The reports provide analysis on the participation and administration of elections and referendums and include information on electorate sizes, turnout, rejected ballots and postal votes.

The Excel and CSV files provide information on the administration of elections and referendums and include data on electorate sizes, turnout, rejected ballots and postal votes.

Date Election/Referendum Report Excel files CSV files
8 June 2017UK Parliament general electionReports (PDF)Electoral data (XLS)Electoral data (CSV - Zip file)
4 May 2017Combined Authority Mayoral electionsTo be published in November 2017.
4 May 2017English local council electionsTo be published in November 2017.
4 May 2017Welsh local council electionsReport (PDF)Electoral data (XLS)Electoral data (CSV - Zip file)
4 May 2017Scottish local council electionsReport (PDF)Electoral data (XLS)Electoral data (CSV - Zip file)
23 June 2016 Referendum on the UK's membership of the EU N/A Electoral data (XLS)Electoral data (CSV - Zip file)

5 May 2016

English Local council elections

Report (PDF)

Electoral data (XLS)

Electoral data (CSV - Zip file)

5 May 2016

London Mayoral election & Greater London Authority election

Report (PDF)

Electoral data (XLS)

Electoral data (CSV - Zip file)

5 May 2016

National Assembly for Wales election

Report (PDF)

Electoral data and Results (XLS)

Electoral data and Results (CSV - Zip file)

5 May 2016

Police and Crime Commissioner (PCC) elections

Report (PDF)

Electoral data (XLS)

Electoral data (CSV - Zip file)

5 May 2016

Scottish Parliament election

Report (PDF)

Electoral data and Results (XLS)

Electoral data and Results (CSV - Zip file)

7 May 2015

UK Parliament general election

Report (PDF)

Electoral data (XLS)

Results (XLS)

Electoral data (CSV - Zip file)

Results (CSV - Zip file)

7 May 2015 English Local council elections Report (PDF) Electoral data (XLS) Electoral data (CSV files - ZIP)

18 September 2014

Scottish Independence Referendum

N/A

Electoral data (XLS)

Electoral data (CSV)

22 May 2014 European Parliament election Report (PDF) Electoral data (XLS) Electoral data (CSV files - ZIP)
22 May 2014 English Local council elections Report (PDF) Electoral data (XLS) Electoral data (CSV files - ZIP)
2 May 2013 English and Anglesey local elections Report (PDF) Electoral data (XLS) N/A
15 November 2012 Police and Crime Commissioner (PCC) elections Report (PDF) Electoral data (XLS) N/A
3 May 2012 English local council elections Report (PDF) Electoral data (XLS) N/A
3 May 2012 Welsh local council elections Report (PDF) Electoral data (XLS) N/A
3 May 2012 Scottish local council elections Report (PDF) Electoral data (XLS) N/A
3 May 2012 London mayoral election Report (PDF) Electoral data (XLS) N/A
5 May 2011 UK Parliamentary voting system referendum Report (PDF) Electoral data (XLS) N/A
5 May 2011 National Assembly for Wales election Report (PDF) Electoral data (XLS)
Results (XLS)
N/A
5 May 2011 Scottish Parliament election Report (PDF) Electoral data (XLS)
Results (XLS)
N/A
5 May 2011 English local government elections Report (PDF) Electoral data (XLS) N/A
6 May 2010 UK Parliament general election Report (PDF) Electoral Data (XLS)
Results (XLS)
Results for analysis (XLS)
N/A
6 May 2010 English local council election Report (PDF) Electoral data (XLS) N/A
4 June 2009 European Parliament election Report (PDF) Electoral data (XLS) N/A
4 June 2009 English local council election Report (PDF) Electoral data (XLS) N/A
1 May 2008 English local council elections Report (PDF) Electoral data (XLS) N/A
1 May 2008 Welsh local council elections N/A Electoral data (XLS) N/A
3 May 2007 Scottish Parliament election Report (PDF) Turnout - Constituency (XLS)
Postal votes – Constituency (XLS)
Proxy votes – Constituency (XLS)
Rejected ballots – Constituency (XLS)
Rejected ballots – Region (XLS)
Constituency results (XLS)
List results (XLS)
N/A
3 May 2007 National Assembly for Wales election N/A Electoral data/Results (XLS) N/A
3 May 2007 English local council elections Report (PDF) Electoral data (XLS) N/A
3 May 2007 Scottish local council elections Report (PDF) N/A N/A
4 May 2006 English local council elections Report (PDF) Electoral data (XLS) N/A
5 May 2005 UK Parliament general election Report (PDF) Electoral Data (XLS)
Results (CSV)
N/A
10 June 2004 European Parliament election Report (PDF) Data included in the appendix of the report N/A
7 June 2001UK Parliament general electionN/AElectoral data (XLS)N/A

Data for Northern Ireland are available from The Electoral Office of Northern Ireland (EONI).

More electoral data and reports from previous elections are available through our Research and Policy search engine.


Other research

We have also conducted research in the following  areas:

  • electoral administration
  • candidates, agents and campaigners
  • voter turnout and public engagement
  • electoral fraud
  • media and campaigns
  • party and election finance
  • party registration

Other research reports

Electoral Administration

Candidates, Agents and Campaigners

Voter turnout and public engagement

Electoral fraud

Media and campaigns

Party and election finance

Party identifiers

Research