Westminster Voting Intention
| End Date | Company | Client | CON | LAB | LD | UKIP | Lead |
| 10 Dec 2012 | Kantar TNS | 26 | 41 | 8 | 16 | +15 | |
| 10 Dec 2012 | Ipsos MORI | Evening Standard | 35 | 44 | 9 | 7 | +9 |
| 10 Dec 2012 | YouGov | Sun | 33 | 42 | 10 | 8 | +9 |
| 07 Dec 2012 | YouGov | Sunday Times | 33 | 42 | 10 | 9 | +9 |
| 06 Dec 2012 | YouGov | Sun | 32 | 42 | 10 | 9 | +10 |
| 05 Dec 2012 | YouGov | Sun | 32 | 44 | 9 | 10 | +12 |
| 04 Dec 2012 | YouGov | Sun | 30 | 44 | 11 | 10 | +14 |
| 03 Dec 2012 | Kantar TNS | 28 | 40 | 10 | 12 | +12 | |
| 03 Dec 2012 | YouGov | Sun | 31 | 43 | 11 | 10 | +12 |
| 01 Dec 2012 | YouGov | Sunday Times | 31 | 44 | 10 | 10 | +13 |
| 29 Nov 2012 | YouGov | Sun | 32 | 42 | 10 | 10 | +10 |
| 29 Nov 2012 | Opinium | Observer | 29 | 38 | 9 | 13 | +9 |
| 29 Nov 2012 | Angus Reid | 28 | 42 | 10 | 11 | +14 | |
| 28 Nov 2012 | YouGov | Sun | 32 | 44 | 11 | 8 | +12 |
| 27 Nov 2012 | YouGov | Sun | 31 | 43 | 9 | 11 | +12 |
| 26 Nov 2012 | YouGov | Sun | 34 | 43 | 9 | 8 | +9 |
| 25 Nov 2012 | Savanta ComRes | Independent | 35 | 42 | 10 | 6 | +7 |
| 25 Nov 2012 | Kantar TNS | 31 | 41 | 8 | 10 | +10 | |
| 23 Nov 2012 | YouGov | Sunday Times | 33 | 44 | 9 | 8 | +11 |
| 22 Nov 2012 | YouGov | Sun | 31 | 43 | 10 | 9 | +12 |
| 21 Nov 2012 | YouGov | Sun | 33 | 41 | 9 | 10 | +8 |
| 20 Nov 2012 | YouGov | Sun | 33 | 42 | 10 | 8 | +9 |
| 19 Nov 2012 | YouGov | Sun | 32 | 42 | 9 | 9 | +10 |
| 18 Nov 2012 | ICM | Guardian | 32 | 40 | 13 | 7 | +8 |
| 16 Nov 2012 | Savanta ComRes | Independent on Sunday | 31 | 43 | 10 | 8 | +12 |
| 16 Nov 2012 | YouGov | Sunday Times | 33 | 44 | 9 | 8 | +11 |
| 16 Nov 2012 | Kantar TNS | 31 | 39 | 11 | 7 | +8 | |
| 15 Nov 2012 | Opinium | Observer | 32 | 39 | 8 | 10 | +7 |
| 15 Nov 2012 | YouGov | Sun | 33 | 43 | 8 | 9 | +10 |
| 14 Nov 2012 | YouGov | Sun | 35 | 42 | 8 | 7 | +7 |
| 13 Nov 2012 | Ipsos MORI | Evening Standard | 32 | 46 | 9 | 3 | +14 |
| 13 Nov 2012 | YouGov | Sun | 34 | 44 | 9 | 7 | +10 |
| 12 Nov 2012 | Kantar TNS | 31 | 41 | 9 | 9 | +10 | |
| 12 Nov 2012 | YouGov | Sun | 35 | 39 | 10 | 8 | +4 |
| 09 Nov 2012 | YouGov | Sunday Times | 32 | 44 | 8 | 8 | +12 |
| 08 Nov 2012 | YouGov | Sun | 33 | 44 | 9 | 7 | +11 |
| 07 Nov 2012 | YouGov | Sun | 34 | 45 | 8 | 6 | +11 |
| 06 Nov 2012 | YouGov | Sun | 35 | 42 | 9 | 7 | +7 |
| 05 Nov 2012 | Kantar TNS | 31 | 42 | 9 | 8 | +11 | |
| 05 Nov 2012 | YouGov | Sun | 35 | 44 | 8 | 7 | +9 |
| 02 Nov 2012 | YouGov | Sunday Times | 35 | 42 | 9 | 7 | +7 |
| 01 Nov 2012 | YouGov | Sun | 33 | 44 | 9 | 7 | +11 |
| 01 Nov 2012 | Opinium | Observer | 30 | 41 | 9 | 10 | +11 |
| 31 Oct 2012 | YouGov | Sun | 33 | 44 | 9 | 8 | +11 |
| 30 Oct 2012 | YouGov | Sun | 32 | 44 | 9 | 8 | +12 |
| 29 Oct 2012 | Kantar TNS | 31 | 42 | 11 | 8 | +11 | |
| 29 Oct 2012 | Savanta ComRes | Independent | 33 | 44 | 12 | 5 | +11 |
| 29 Oct 2012 | YouGov | Sun | 33 | 43 | 9 | 8 | +10 |
| 26 Oct 2012 | YouGov | Sunday Times | 35 | 42 | 9 | 7 | +7 |
| 25 Oct 2012 | YouGov | Sun | 33 | 44 | 10 | 6 | +11 |
| 24 Oct 2012 | YouGov | Sun | 33 | 43 | 9 | 8 | +10 |
| 24 Oct 2012 | Ipsos MORI | Evening Standard | 33 | 43 | 9 | 6 | +10 |
| 23 Oct 2012 | YouGov | Sun | 34 | 42 | 9 | 8 | +8 |
| 22 Oct 2012 | Kantar TNS | 30 | 44 | 8 | 7 | +14 | |
| 22 Oct 2012 | ICM | Guardian | 33 | 41 | 14 | 5 | +8 |
| 22 Oct 2012 | YouGov | Sun | 32 | 45 | 8 | 8 | +13 |
| 21 Oct 2012 | Populus | Times | 35 | 40 | 9 | 5 | +5 |
| 20 Oct 2012 | Survation | Mail on Sunday | 30 | 43 | 8 | 12 | +13 |
| 19 Oct 2012 | YouGov | Sunday Times | 32 | 43 | 9 | 9 | +11 |
| 18 Oct 2012 | Opinium | Observer | 31 | 40 | 9 | 10 | +9 |
| 18 Oct 2012 | YouGov | Sun | 34 | 42 | 10 | 9 | +8 |
| 18 Oct 2012 | Savanta ComRes | Independent on Sunday | 33 | 41 | 10 | 9 | +8 |
| 17 Oct 2012 | YouGov | Sun | 33 | 42 | 9 | 7 | +9 |
| 16 Oct 2012 | YouGov | Sun | 34 | 43 | 9 | 7 | +9 |
| 15 Oct 2012 | Kantar TNS | 29 | 42 | 7 | 10 | +13 | |
| 15 Oct 2012 | YouGov | Sun | 34 | 43 | 9 | 7 | +9 |
| 12 Oct 2012 | YouGov | Sunday Times | 33 | 43 | 10 | 6 | +10 |
| 12 Oct 2012 | Angus Reid | Sunday Express | 31 | 43 | 8 | 8 | +12 |
| 11 Oct 2012 | YouGov | Sun | 35 | 42 | 8 | 7 | +7 |
| 10 Oct 2012 | YouGov | Sun | 34 | 41 | 8 | 10 | +7 |
| 09 Oct 2012 | YouGov | Sun | 33 | 45 | 9 | 6 | +12 |
| 08 Oct 2012 | Kantar TNS | 31 | 44 | 8 | 8 | +13 | |
| 08 Oct 2012 | YouGov | Sun | 34 | 44 | 8 | 7 | +10 |
| 05 Oct 2012 | YouGov | Sunday Times | 31 | 45 | 8 | 8 | +14 |
| 04 Oct 2012 | YouGov | Sun | 32 | 43 | 10 | 8 | +11 |
| 04 Oct 2012 | Opinium | Observer | 30 | 41 | 9 | 11 | +11 |
| 03 Oct 2012 | YouGov | Sun | 31 | 45 | 10 | 7 | +14 |
| 02 Oct 2012 | YouGov | Sun | 34 | 42 | 9 | 8 | +8 |
| 01 Oct 2012 | YouGov | Sun | 34 | 43 | 9 | 8 | +9 |
| 30 Sep 2012 | Savanta ComRes | Independent | 35 | 38 | 15 | 4 | +3 |
| 28 Sep 2012 | YouGov | Sunday Times | 35 | 40 | 10 | 7 | +5 |
| 28 Sep 2012 | Opinium | Observer | 29 | 39 | 10 | 10 | +10 |
| 27 Sep 2012 | YouGov | Sun | 31 | 43 | 11 | 8 | +12 |
| 26 Sep 2012 | YouGov | Sun | 32 | 41 | 9 | 9 | +9 |
| 25 Sep 2012 | YouGov | Sun | 31 | 44 | 9 | 9 | +13 |
| 24 Sep 2012 | YouGov | Sun | 32 | 43 | 9 | 7 | +11 |
| 23 Sep 2012 | ICM | Guardian | 31 | 41 | 14 | 6 | +10 |
| 21 Sep 2012 | YouGov | Sunday Times | 34 | 43 | 8 | 8 | +9 |
| 21 Sep 2012 | Savanta ComRes | Independent on Sunday | 35 | 39 | 10 | 8 | +4 |
| 21 Sep 2012 | Survation | Mail on Sunday | 29 | 41 | 10 | 12 | +12 |
| 21 Sep 2012 | Opinium | Observer | 30 | 42 | 8 | 10 | +12 |
| 21 Sep 2012 | Kantar TNS | 28 | 44 | 8 | 7 | +16 | |
| 20 Sep 2012 | Survation | Mirror | 30 | 40 | 10 | 12 | +10 |
| 20 Sep 2012 | YouGov | Sun | 35 | 41 | 9 | 7 | +6 |
| 19 Sep 2012 | YouGov | Sun | 33 | 45 | 10 | 7 | +12 |
| 18 Sep 2012 | YouGov | Sun | 34 | 43 | 8 | 8 | +9 |
| 17 Sep 2012 | YouGov | Sun | 33 | 45 | 10 | 5 | +12 |
| 17 Sep 2012 | Ipsos MORI | Sky News/Evening Standard | 30 | 41 | 13 | 8 | +11 |
| 16 Sep 2012 | Populus | Times | 30 | 45 | 10 | 6 | +15 |
| 14 Sep 2012 | YouGov | Sunday Times | 34 | 44 | 9 | 7 | +10 |