Here's how the parties have performed in the 2011 elections, compared with the previous polls in 2007, in the number of seats won and lost.
| Party | Year | Seats | Swing | |
|---|---|---|---|---|
| Conservative Party | 2011 | 15 | -9 |  |
| 2007 | 24 |  |
||
| Green Party | 2011 | 0 | - | |
| 2007 | 0 | |||
| Independent | 2011 | 4 | - |  |
| 2007 | 4 |  |
||
| Labour Party | 2011 | 21 | +12 |  |
| 2007 | 9 |  |
||
| Liberal Democrat | 2011 | 3 | -3 |  |
| 2007 | 6 |  |