Three provincial by-elections were held in Nova Scotia in 2010 to fill vacancies in the House of Assembly.
The district of Glace Bay was vacated by Liberal Party MNA Dave Wilson; Geoff MacLellan won the election to replace him on June 22, 2010.
|NDP |Myrtle Campbell |align="right"|2281 |align="right"|31.52 |align="right"|
|PC |Michelle Wheelhouse |align="right"|759 |align="right"|10.48 |align="right"|
|Independent |Edna Lee |align="right"|195 |align="right"|2.69 |align="right"|
The district of Yarmouth was vacated by Liberal Party MNA Richard Hurlburt; Zach Churchill won the election to replace him on June 22, 2010.
|Progressive Conservative |Charles Crosby |align="right"|2628 |align="right"|33.41 |align="right"|-27.93
|Independent |Belle Hatfield |align="right"|673 |align="right"|8.56 |align="right"|ÃÂ
|New Democratic Party |John Deveau |align="right"|513 |align="right"|6.52 |align="right"|-16.41
The district of Cumberland South was vacated by Progressive Conservative MNA Murray Scott; Jamie Baillie won the election to replace him on October 26, 2010.
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|Progressive Conservative |Jamie Baillie |align="right"|3,262 |align="right"|57.20% |align="right"|
|New Democratic Party |Scott McKee |align="right"|276 |align="right"|4.84% |align="right"|