Opinion polling for the 2015 United Kingdom general election

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In the run up to the next United Kingdom general election, various organisations carry out opinion polling to gauge voting intention. Results of such polls are displayed in this article. Most of the polling companies listed are members of the British Polling Council (BPC) and abide by its disclosure rules.

The date range for these opinion polls is from the previous general election, held on 6 May 2010, to the present day. Under fixed-term legislation, the next general election is scheduled to be held in May 2015.

Most opinion polls cover only Great Britain (the UK excluding Northern Ireland). Separate polls covering constituent countries of the UK and English regions are reported further below while polling of individual constituencies and groups of them (such as groups of marginals) is covered in a separate article.

Graphical summary[edit]

15-day average trend line of poll results from 6 May 2010 to 10 January 2015, with each line corresponding to a political party.                     Labour Party                     Conservative Party                     Liberal Democrats                     UK Independence Party                     Green Parties

The chart shows the relative state of the parties from 13 May 2010 to the date the next election is held, with each line's colour corresponding to a political party: red for the Labour Party, blue for the Conservative Party, purple for the UK Independence Party, yellow for the Liberal Democrats, and green for the Green Parties. While not being shown, other parties such as the Scottish National Party have on occasion polled higher than one or more of the parties represented. Each dot represents a party's results from an opinion poll displayed in the table below.

Poll results[edit]

Poll results are listed in the table below in reverse chronological order. The highest percentage figure in each polling survey is displayed in bold, and the background shaded in the leading party's colour. The 'party lead' column shows the percentage-point difference between the two parties with the highest figures. Throughout the present parliament, first and second place has without exception alternated between the Conservatives and Labour. In the instance of a tie, no figure is shaded but both are displayed in bold. The Liberal Democrats and the UK Independence Party have tended to hold either third or fourth place in each individual poll. The combined Green parties of England and Wales and Scotland have most frequently polled fifth and have on occasions polled fourth – level with or ahead of the UK Independence Party or the Liberal Democrats. Included in the 'others' column are other smaller parties, the largest of which (by votes at the 2010 general election) are the British National Party, the Scottish National Party and Plaid Cymru. Detailed poll results that break down 'others' for some dates in 2014 and 2010 are available in a second table, below.

2015[edit]

Date(s)
conducted
Polling organisation/client Sample size Con Lab LD UKIP Green Others Lead
28–29 Jan Populus 2,020 34% 35% 10% 14% 4% 3% 1%
28–29 Jan YouGov/The Sun 1,593 34% 34% 6% 14% 7% 5% Tied
27–28 Jan YouGov/The Sun 1,548 33% 33% 6% 16% 7% 5% Tied
26–27 Jan YouGov/The Sun 1,655 34% 33% 7% 14% 7% 5% 1%
25–26 Jan YouGov/The Sun 1,656 34% 33% 6% 15% 7% 5% 1%
25 Jan Survation/Daily Mirror 1,014 31% 30% 7% 23% 3% 6% 1%
23–25 Jan ComRes/The Independent 1,001 31% 30% 8% 17% 7% 7% 1%
23–25 Jan Populus 2,039 34% 35% 9% 13% 6% 3% 1%
22–25 Jan Lord Ashcroft 1,001 32% 32% 6% 15% 9% 6% Tied
22–23 Jan YouGov/Sunday Times 1,578 32% 32% 7% 15% 7% 6% Tied
21–22 Jan Populus 2,049 32% 36% 9% 13% 6% 4% 4%
21–22 Jan YouGov/The Sun 1,640 31% 33% 7% 17% 8% 4% 2%
20–21 Jan YouGov/The Sun 1,645 33% 34% 6% 14% 8% 5% 1%
19–20 Jan YouGov/The Sun 1,570 32% 30% 8% 15% 10% 5% 2%
18–19 Jan YouGov/The Sun 1,747 32% 32% 8% 15% 7% 6% Tied
16–19 Jan ICM/The Guardian 1,002 30% 33% 11% 11% 9% 7% 3%
15–19 Jan TNS 1,188 31% 31% 8% 16% 7% 7% Tied
16–18 Jan Lord Ashcroft 1,004 29% 28% 9% 15% 11% 8% 1%
16–18 Jan Populus 2,036 35% 36% 8% 13% 4% 4% 1%
15–16 Jan YouGov/Sunday Times 1,647 31% 32% 7% 18% 7% 4% 1%
14–15 Jan YouGov/Sun on Sunday 1,763 31% 33% 7% 16% 7% 6% 2%
14–15 Jan ComRes/Sunday Mirror, Independent on Sunday 2,023 33% 34% 7% 18% 3% 5% 1%
14–15 Jan Populus 2,070 32% 35% 9% 14% 6% 4% 3%
14–15 Jan YouGov/The Sun 1,660 32% 32% 6% 16% 8% 6% Tied
13–15 Jan Opinium/Observer 1,966 28% 33% 7% 20% 6% 6% 5%
13–14 Jan YouGov/The Sun 1,834 32% 34% 6% 15% 7% 6% 2%
12–13 Jan YouGov/The Sun 1,782 32% 33% 7% 14% 7% 6% 1%
11–13 Jan Ipsos-MORI/The Evening Standard 1,010 33% 34% 8% 11% 8% 6% 1%
11–12 Jan YouGov/The Sun 1,649 32% 33% 6% 17% 6% 6% 1%
9–11 Jan Lord Ashcroft 1,002 34% 28% 8% 16% 8% 6% 6%
9–11 Jan Populus 2,056 32% 37% 10% 13% 4% 4% 5%
8–9 Jan YouGov/Sunday Times 1,684 32% 32% 7% 18% 6% 5% Tied
7–8 Jan Populus 2,046 33% 34% 8% 14% 6% 5% 1%
7–8 Jan YouGov/The Sun 1,753 33% 33% 8% 13% 7% 6% Tied
6–8 Jan TNS 1,201 28% 35% 6% 18% 5% 8% 7%
6–7 Jan YouGov/The Sun 1,707 32% 33% 7% 15% 7% 6% 1%
5–6 Jan YouGov/The Sun 1,769 33% 33% 7% 13% 8% 5% Tied
4–5 Jan YouGov/The Sun 1,728 31% 34% 7% 14% 8% 6% 3%
2–4 Jan Populus 2,046 34% 36% 9% 12% 5% 5% 2%
30 Dec–2 Jan Opinium/The Observer 1,970 32% 33% 8% 17% 4% 7% 1%

2014[edit]

2013[edit]

2012[edit]

2011[edit]

2010[edit]

Note: some polls in 2010 did not give an individual figure for the UK Independence Party or the Greens. In these cases, the percentage intending to vote Green and/or UKIP is included with the 'others'.

Sub-national polling[edit]

Polling is conducted in separate regions of the United Kingdom, especially constituent countries of the United Kingdom outside England. Of the 650 seats in the House of Commons London has 73, Scotland has 59, Wales has 40 and Northern Ireland has 18.

England[edit]

Since December 2014 a number of polling organisations have been reporting England data in their Great Britain polls.[8]

Date(s)
conducted
Polling organisation/client Sample size Con Lab LD UKIP Green Others Lead
23–25 Jan 2015 ComRes/The Independent 852 33% 29% 9% 20% 8% 1% 4%
22–25 Jan 2015 Lord Ashcroft[9] 859 33% 34% 5% 17% 9% 2% 1%
16–19 Jan 2015 ICM/The Guardian[10] 863 32% 35% 8% 14% 10% 1% 3%
16–18 Jan 2015 Lord Ashcroft[9] 871 31% 27% 9% 17% 12% 4% 4%
11–13 Jan 2015 Ipsos-Mori/Evening Standard 854 35% 35% 8% 12% 8% 2% Tied
9–11 Jan 2015 Lord Ashcroft[9] 858 37% 29% 7% 17% 8% 2% 8%
12–16 Dec 2014 ICM/The Guardian[10] 861 31% 33% 11% 17% 5% 3% 2%
13–15 Dec 2014 Ipsos-Mori/Evening Standard 840 36% 31% 9% 14% 10% 0% 5%
12–14 Dec 2014 ComRes/The Independent 897 29% 34% 12% 17% 6% 2% 5%
5–7 Dec 2014 Lord Ashcroft[9] 860 31% 31% 7% 23% 6% 2% Tied
6 May 2010 General Election Results 25,085,097 39.6% 28.1% 24.2% 3.5% 1.0% 3.6% 11.5%

Scotland[edit]

Date(s) conducted

Polling organisation/client

Sample size

SNP

Lab

Con

LD

UKIP

Green

Others

Lead

12–19 Jan 2015 Ipsos Mori/STV News 774 52% 24% 12% 4% 1% 4% 3% 28%
12–16 Jan 2015 Survation/Daily Record 1,006 46% 26% 14% 7% 4% 3% 1% 20%
9–14 Jan 2015 Panelbase/Sunday Times 1,007 41% 31% 14% 3% 7% 3% 10%
16–18 Dec 2014 ICM/The Guardian 1,004 43% 26% 13% 6% 7% 4% 1% 17%
15–18 Dec 2014 Survation/Daily Record 1,001 48% 24% 16% 5% 4% 1% 1% 24%
13 Dec 2014 Jim Murphy becomes Leader of the Scottish Labour Party
9–11 Dec 2014 YouGov/The Sun 1,081 47% 27% 16% 3% 3% 3% 1% 20%
27 Nov Release of Smith Commission Report
19 Nov Nicola Sturgeon becomes First Minister of Scotland
6–13 Nov 2014 Survation/Daily Record 1,001 46% 24% 17% 6% 5% 2% 1% 22%
30 Oct–4 Nov 2014 Panelbase/Wings Over Scotland 1,000 45% 28% 15% 3% 7% 1% 1% 17%
27–30 Oct 2014 YouGov/The Times 1,078 43% 27% 15% 4% 6% 4% 1% 16%
22–29 Oct 2014 Ipsos Mori/STV 769 52% 23% 10% 6% 2% 6% 1% 29%
29 Sep–1 Oct 2014 Panelbase/SNP 1,049 34% 32% 18% 5% 6% 5% 2%
19 Sep 2014 Scottish independence referendum
4–8 Jul 2014 Survation/Daily Record 786 38% 33% 17% 5% 5% 2% <1% 5%
6–10 Jun 2014 Survation/Daily Record 773 40% 32% 15% 5% 6% 1% 1% 8%
22 May European Parliament Elections, 2014
11–15 Apr 2014 Survation/Sunday Post 808 36% 36% 16% 6% 3% 1% 1% Tied
4–7 Apr 2014 Survation/Daily Record 803 40% 34% 15% 6% 3% 1% 1% 6%
6–7 Mar 2014 Survation/Daily Record 850 38% 36% 15% 5% 3% 1% 1% 2%
17–18 Feb 2014 Survation/Daily Mail 805 38% 33% 17% 6% 4% 2% 1% 5%
29–31 Jan 2014 Survation/Daily Mail 776 30% 39% 16% 6% 4% 2% 1% 9%
4–8 Oct 2013 Lord Ashcroft 737 31% 40% 18% 6% 2% 2% 1% 9%
22 Feb–9 May 2013 Lord Ashcroft 6,659 23% 45% 16% 8% 5% 2% <1% 22%
17–28 Oct 2012 Lord Ashcroft 703 39% 33% 17% 6% 7% 6%
17–20 Jun 2012 YouGov/Fabian Society 1,029 29% 43% 16% 8% 3% 3% 1% 14%
3 May 2012 Scottish Local Elections, 2012
22–24 Feb 2012 YouGov 1,053 30% 42% 17% 7% 4% 12%
12–15 Jan 2012 YouGov 1,053 37% 35% 16% 7% 5% 2%
5 May 2011 Scottish Parliament Election, 2011
2–4 May 2011 YouGov 1,053 28% 44% 17% 7% 5% 16%
6 May 2010 General Election Results 2,465,722 19.9% 42.0% 16.7% 18.9% 0.7% 0.7% 1.7% 22.1%

Wales[edit]

Date(s) conducted

Polling organisation/client

Sample size

Plaid

Lab

Con

LD

UKIP

Green

Others

19–21 Jan 2015 YouGov/ITV Wales 1,036 10% 37% 23% 6% 16% 8% 1%
8–13 Jan 2015 ICM/BBC Wales 1,004 12% 38% 21% 7% 13% 6% 2%
2–3 Dec 2014 YouGov/ITV Wales 1,131 11% 36% 23% 5% 18% 5% 2%
19–22 Sep 2014 ICM/BBC Wales 1,006 13% 39% 23% 5% 16% 2% 1%
8–11 Sep 2014 YouGov/ITV Wales 1,025 11% 38% 23% 6% 17% 5% 1%
26 Jun–1 Jul 2014 YouGov/ITV Wales 1,035 11% 41% 25% 5% 14% 3% 2%
12–14 May 2014 YouGov/ITV Wales 1,092 11% 43% 22% 7% 13% 3% 2%
11–22 Apr 2014 YouGov/University of Cardiff 1,027 11% 45% 24% 7% 10% 1% 2%
21-24 Feb 2014 ICM/BBC Wales 1,000 15% 45% 24% 6% 8% 2% 1%
10–12 Feb 2014 YouGov/ITV Wales 1,250 11% 47% 22% 7% 9% 2% 2%
2–4 Dec 2013 YouGov/ITV Wales 1,001 12% 46% 21% 8% 10% 2% 2%
18–22 Jul 2013 YouGov 1,012 9% 48% 23% 8% 8% 2% 2%
18–20 Feb 2013 YouGov/ITV Wales 1,007 10% 51% 22% 9% 7% 1% 1%
2–4 Jul 2012 YouGov/ITV Wales 1,000 10% 54% 23% 4% 9%
12–16 Apr 2012 YouGov 1,039 12% 50% 23% 7% 9%
30 Jan–1 Feb 2012 YouGov/ITV Wales 1,008 11% 50% 25% 6% 5% 3% 2%
2–4 May 2011 YouGov/ITV Wales 1,010 10% 50% 24% 8% 4% 2% 2%
6 May 2010 General Election Results 1,466,690 11.3% 36.2% 26.1% 20.1% 2.4% 0.4% 3.4%

Northern Ireland[edit]

Date(s) conducted

Polling organisation/client

Sample size

DUP

SF

SDLP

UUP

Alliance

Others

11–24 Sep 2014 LucidTalk/Belfast Telegraph 1,089 26% 24% 15% 12% 6% 17%
7 Mar 2013 Mid Ulster by-election, 2013.
30 Sep 2013–28 Dec 2013 Northern Ireland Life & Times[11] 1,280 22% 20% 23% 16% 14% 5%
1 Oct 2012–10 Jan 2013 Northern Ireland Life & Times[11] 1,204 27% 19% 21% 16% 13% 3%
9 Jun 2011 Belfast West by-election, 2011.
01 Oct 2010–18 Dec 2010 Northern Ireland Life & Times[11] 1,205 24% 15% 23% 21% 13% 4%
6 May 2010 General Election Results (NI only) 673,871 25% 26% 16% 15% 6% 12%

London[edit]

Date(s)
conducted
Polling organisation/client Sample size Con Lab UKIP LD Green Others Lead
19-21 Jan 2015 YouGov/Evening Standard 1,034 32% 42% 10% 7% 8% <0.5% 10%
8–13 Aug 2014 YouGov/Evening Standard 1,200 35% 45% 8% 8% 4% <0.5% 10%
24–30 Apr 2012 Opinium 736 33% 43% 6% 10% 7% 2% 10%
13–15 Apr 2012 YouGov/Evening Standard 1,138 31% 50% 6% 8% 3% 2% 19%
10–16 Jan 2012 YouGov 1,349 34% 44% 5% 8% 3% 2% 10%
7–9 Jun 2011 YouGov 1,215 32% 51% 3% 8% 3% 2% 19%
5–8 Oct 2010 YouGov 1,271 38% 42% 2% 13% 3% 2% 4%
6 May 2010 General Election Results 3,401,317 34.5% 36.6% 1.7% 22.1% 1.6% 3.5% 2.1%

Detailed poll results[edit]

The tables above show poll results just for the four largest parties. Detailed poll results are given below. Often poll companies publish a combined result for SNP and Plaid Cymru, indicated by a merged cell below. Other cases of Party results' not being shown individually are included in the "Others" column, with the individual party's box remaining empty. Results showing <0.5% imply percentages ranging from 0.01% to 0.49%. 0.5% to 1.49% are rounded to 1%.

Methodology[edit]

Each polling organisation uses slightly different methodology in their collection of data; a brief description of each company's methods are as follows:

  • Angus Reid Public Opinion collect their data through online internet surveys, and demographically weight their data to be representative of the whole population in terms of age, gender, social class, the region of the country they live in and newspaper readership. Past vote weighting is used, and is calculated separately for respondents from Scotland and respondents from England & Wales, whilst those saying they do not know how they will vote are asked which party they are leaning towards, and any responses to this are used as a full response, whilst those still unsure being discounted from the final calculation of levels of party support.[14]
  • ComRes uses both telephone interviews and online surveys to collect their data, although all polls will be conducted using one method exclusively. All respondents are weighted according to gender, age, social class, household tenure, work status, number of cars owned and whether or not they have taken a foreign holiday in the previous three years. Both telephone and online polls are weighted according to past vote in the last general election, whilst telephone polls also use data from the last 12 ComRes telephone conducted opinion polls. ComRes compensate for those respondents who says they do not know by asking them instead which party they most clearly identify with, whilst all respondents are weighted according to likelihood to vote on a scale of one to ten, with respondents saying their likelihood of voting is less than four being discounted entirely, and respondents saying their likelihood is more than five being progressively weighted, with a five-out-of-ten likelihood being weighted as half a response and a ten-out-of-ten likelihood being weighted as one whole response.[15]
  • ICM also collect their data through telephone interviews, and also demographically weight their respondents according to their gender, age, social class, household tenure, work status and the region of the country they live in. They weight their respondents according to the levels of support a party received in the previous general election and the last 25 ICM opinion polls, and if a past vote is given, this is used to allocate a response to those who say they do not know how they will vote, although such a response is counted as only half of one whole response. ICM also weight their respondents as to how likely they say they are to vote, with respondents who say they are certain to vote given a higher weighting than those who are not as certain, whilst if a respondent did not vote at the previous general election, their turnout weighting is automatically reduced to half its value.[16]
  • Ipsos MORI collect their data through telephone interviews, and weight their respondents to be demographically representative of gender, age, social class, work status, work sector, household tenure and the region of the country they live in. They do not weight their data according to the way respondents voted at the previous general election, discount any respondents who say they do not know how they will vote, and only include the responses of people who says they are certain to vote in the final calculation of levels of support for each party.[17]
  • Opinium surveys are conducted online via web interviewing, drawing a sample of responses from the company's panel of around 30,000 people. This sample is representative of the adult population of Great Britain in the areas of age, gender, regional location, working status and social grade, as according to the latest Office for National Statistics data. Responses from different demographic groups are handled appropriately to compensate for differential response rates in these different groups.[18]
  • Populus: Populus conduct their surveys over the telephone, and weight all respondents according to gender, age, social class, household tenure, work status, the number of cars they own, and whether they have taken a foreign holiday in the past three years, to be representative of the whole electorate. Respondents are weighted according to their past vote and the levels of support for each party recorded in the previous 20 Populus opinion polls. Respondents who say they do not know how they will vote are allocated according to how they voted at the last general election, albeit at a reduced weighting of 0.5 for previous Conservative or Labour voters and 0.3 for previous Liberal Democrat voters. All respondents are also weighted according to how likely they are to vote, with those certain to vote given the highest weighting.[19]
  • Survation opinion polling is achieved through online surveys, and all data is weighted to represent the wider population of the United Kingdom in terms of gender, age, socio-economic group, religion, how they have previously voted, and how likely a person says they are to vote in the next general election. Respondents who are either undecided or refuse to state how they would vote are excluded from the final results, unless they have provided details of how they have voted in the past, in which case, that information is used to adjust the results accordingly.[20]
  • TNS-BMRB interview a representative sample of adults aged 18+. All interviews are conducted in respondents' homes, although the voting intention data is collected using self-completion methods. The data is weighted twice: firstly to match population totals for age, sex, social grade, working status, presence of children, 2010 voting patterns and region; and secondly, for voting intention questions only, an additional 'likelihood-to-vote' weight is applied.[21]
  • YouGov collect their data through an online survey, and weight their respondents to be representative of the population as a whole in terms of age, gender, social class, identification with a political party, region of the country and newspaper readership. They weight their respondents according to how they voted in the previous general election in order to achieve a sample that is reflective of each party's level of support at that election, whilst those respondents who say they do not know who they will vote for are discounted from calculating levels of support for each party.[22]
  • Michael Ashcroft commissions and publishes polls as Lord Ashcroft Polls. On 12 May 2014 he published the first in a series of opinion polls to be published weekly up to the 2015 UK general election.[23] These polls are carried out by telephone, and are past-vote weighted with an allowance for false recall. They are also weighted for likelihood to vote, with a proportion of Don't Knows reallocated to how respondents said they voted at the 2010 general election. The Conservatives, Labour, Liberal Democrats and UKIP are prompted for. Lord Ashcroft does not disclose the organisation which carries out his fieldwork, but the methodology is similar to that used by Populus before they moved to polling online.[24] He is not a BPC member but has been invited to join.[25]

See also[edit]

References and notes[edit]

Notes
  1. ^ The question asked was "Thinking of the general election in May, for which party will you vote?" rather than Opinium's usual "If there were a general election tomorrow, for which party would you vote?"
  2. ^ This is the VI portion (turnout weighted, Table 4) of Lord Ashcroft's NHS poll, released in January 2015. "VQ.2 If there was a general election tomorrow, which party would you vote for? Base: All respondents expressing an intention to vote (Turnout weighted)"
  3. ^ Only stand in Scotland
  4. ^ Only stand in Wales
  5. ^ Polling organisations treat the two Green Parties in Great Britain, the Green Party of England & Wales and the Scottish Green Party, together
  6. ^ Unusually amongst polling companies, Survation report to one decimal place, and reported Con 30.8%, Lab 31.2%

PThe dates when the fieldwork for this poll was carried out is unknown, therefore the date of publication has been given.

References
  1. ^ See also "Opinium poll that "slipped out" has CON ahead with the LDs down on 5%". politicalbetting.com. Retrieved 22 November 2014. 
  2. ^ a b c d e f g h i j ICM adjust for don't know/refusers by reallocating a proportion of those to the major party they tend to support. Percentage for Greens is based on a table that does not adjust for don't know/refusers.
  3. ^ a b c d Lord Ashcroft adjusts for don't know/refusers by reallocating a proportion of those to the party they tend to support. Before 2 Jun 2014 Ashcroft percentages for Greens are based on a table that does not adjust for don't know/refusers.
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z ICM adjust for don't know/refusers by reallocating a proportion of those to the major party they tend to support. Percentage for UKIP and Greens is based on a table that does not adjust for don't know/refusers.
  5. ^ a b c d e f g h i j k l m n o p q Populus adjust for don't know/refusers by reallocating a proportion of those to the major party they tend to support. Percentage for UKIP and Greens at this date is based on a table that does not adjust for don't know/refusers.
  6. ^ "Vote 2011: England council elections". BBC. Retrieved 22 November 2014. 
  7. ^ a b c d It should be noted that BPIX is not a member of the British Polling Council, unlike the other main pollsters such as YouGov, ComRes, Populus, Ipsos MORI, and ICM. Therefore, the full details of its polls are not subject to public disclosure.
  8. ^ "Well done to the main phone pollsters for now reporting England only numbers". politicalbetting.com. 23 December 2014. Retrieved 1 January 2015. 
  9. ^ a b c d Lord Ashcroft adjusts for don't know/refusers by reallocating a proportion of those to the party they tend to support. The England figures are based on a table that does not adjust for don't knows/refusers.
  10. ^ a b ICM adjust for don't know/refusers by reallocating a proportion of those to the major party they tend to support. Percentages for England are based on a table that does not adjust for don't know/refusers.
  11. ^ a b c The question asked was "Which of these political parties do you feel closest to?", not a voting intention question.
  12. ^ a b c d e f g h i j k l m n o p q r s ICM adjust for don't know/refusers by reallocating a proportion of those to the major party they tend to support. Percentages for SNP/Plaid Cymru/Greens/BNP are based on a table that does not adjust for don't know/refusers.
  13. ^ a b c d e f g h i j k l m Michael Ashcroft adjusts for don't know/refusers by reallocating a proportion of those to the party they tend to support. At this date percentages for Greens/BNP/Others are based on a table that does not adjust for don't know/refusers.
  14. ^ "Angus Reid Public Opinion Methodology". Angus Reid Public Opinion. 2011-07-20. Retrieved 2011-07-26. 
  15. ^ "Public Polling Methodology". ComRes. Retrieved 2011-07-26. 
  16. ^ "July Poll for the Guardian". ICM Research. Retrieved 2011-07-26. 
  17. ^ "Data Collection". Ipsos MORI. Retrieved 2011-07-26. 
  18. ^ "Political Polling". Opinium Research LLP. Retrieved 2012-04-18. 
  19. ^ "Populus sampling and weighting methodology". Populus. Retrieved 2011-07-26. 
  20. ^ "Survation Poll The Budget Aftermath For The Mail On Sunday". Survation. Retrieved 2012-03-27. 
  21. ^ "TNS BMRB Methodology". TNS BMRB. Retrieved 2012-12-17. 
  22. ^ "Panel Methodology". YouGov. Retrieved 2011-07-26. 
  23. ^ "Tories lead in my first weekly national poll". Lord Ashcroft. Retrieved 2014-05-19. 
  24. ^ "Ashcroft – CON 34, LAB 32, LDEM 9, UKIP 15". Anthony Wells. Retrieved 2014-11-02. 
  25. ^ "Minutes of the Annual General Meeting 2013". British Polling Council. Retrieved 2014-05-19. 

External links[edit]