Before (end of 2011) (18 seats, Elections Centre)
Labour 9 · SNP 6 · Liberal Democrats 3 · Conservative 0 · Other 0
After (end of 2012) (18 seats, Elections Centre)
Labour 9 · SNP 6 · Liberal Democrats 3 · Conservative 0 · Other 0
Ward results
Bonnyrigg3 seats
| Derek Milligan | Labour | 1,574 ✓ |
| Bob Constable | SNP | 1,257 ✓ |
| Ian Baxter | Green | 671 ✓ |
| Louie Lorraine Milliken | Labour | 525 |
| Jack Aitchison | Independent | 382 |
| Emma Cummings | Conservative | 365 |
| Tom Munro | SNP | 358 |
Dalkeith3 seats
| Alex Bennett | Labour | 1,021 ✓ |
| Jim Bryant | SNP | 803 ✓ |
| Margot Russell | Labour | 604 ✓ |
| Colin Cassidy | SNP | 410 |
| Robin Traquair | Conservative | 184 |
| George Boyd | Liberal Democrats | 133 |
| Willie Duncan | TUSC | 75 |
Midlothian East3 seats
| Lisa Beattie | SNP | 1,372 ✓ |
| Peter Boyes | Labour | 1,003 ✓ |
| Katie Moffat | Labour | 475 |
| Peter de Vink | Independent | 461 ✓ |
| Paul Bertram | SNP | 405 |
| Richard Thomson | Conservative | 379 |
| Bob Goupillot | TUSC | 52 |
Midlothian South3 seats
| James Muirhead | Labour | 1,305 ✓ |
| Cath Johnstone | SNP | 786 ✓ |
| Dougie Crawford | SNP | 693 |
| Bryan Pottinger | Labour | 559 ✓ |
| Peter Smaill | Conservative | 283 |
Midlothian West3 seats
| Andrew Coventry | SNP | 930 ✓ |
| Owen Thompson | SNP | 789 ✓ |
| Russell Imrie | Labour | 776 ✓ |
| Alex Jones | Labour | 762 |
| Andrew Hardie | Conservative | 462 |
| Leslie Thacker | Liberal Democrats | 246 |
| Helen Blackburn | Green | 226 |
| George McCleery | Independent | 103 |
| Lynn Leitch | TUSC | 41 |
Penicuik3 seats
| Derek Rosie | SNP | 1,427 ✓ |
| Adam Montgomery | Labour | 1,363 ✓ |
| Joe Wallace | SNP | 706 ✓ |
| Sheila Thacker | Liberal Democrats | 562 |
| Sandie Forrest | Conservative | 474 |
| Gary Bell | Green | 237 |