Election for the constituency of Midlothian on 6 May 2010.
An election to the 55th Parliament of the United Kingdom for the constituency area of Midlothian, held as part of the general election on 6 May 2010.
Labour hold by David Hamilton with a majority of 10,349 - 26.4% - on a turnout of 63.9%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| HAMILTON, David | Lab | 18,449 | 47.0% | 1.5% |
| BEATTIE, Colin | SNP | 8,100 | 20.6% | 3.7% |
| LAIRD, Ross | LD | 6,711 | 17.1% | -9.1% |
| CALLANDER, James | Con | 4,661 | 11.9% | 2.5% |
| BAXTER, Ian | Green | 595 | 1.5% | - |
| NORRIE, Gordon | UKIP | 364 | 0.9% | - |
| MCCLEERY, George | Ind | 196 | 0.5% | - |
| DUNCAN, Duncan | TUSC | 166 | 0.4% | - |
An electorate of 61,387, having a valid vote count of 39,242 and an invalid vote count of 50.
Result declared at 02:24 on 7 May 2010. Declarations times do not form part of election declarations and should be regarded as indicative rather than official.
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.