Cassiar was a provincial electoral district in the Canadian province of British Columbia. It first appeared in the British Columbia general election of 1882.
Note: Winners in each election are in bold.
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|- bgcolor="white" !align="right" colspan=3|Total valid votes !align="right"|57 !align="right"|100.00% !align="right"| |- bgcolor="white" !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"|
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|- bgcolor="white" !align="right" colspan=3|Total valid votes !align="right"| !align="right"|100.00% !align="right"| |- bgcolor="white" !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=7|<sup>1</sup> <small>"No strictly accurate return available - the Returning Officer merely stating: 'John Grant elected by a majority of 3'." </small>
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|- bgcolor="white" !align="right" colspan=3|Total valid votes !align="right"|108 !align="right"|100.00% !align="right"| |- bgcolor="white" !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"|
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|Independent (Government?) |William Dalby |align="right"|45 |align="right"|30.61% |align="right"| |align="right"|unknown
|- bgcolor="white" !align="right" colspan=3|Total valid votes !align="right"|147 !align="right"|100.00% !align="right"| |- bgcolor="white" !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"|
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|Independents |George Simpson McTavish |align="right"|45 |align="right"|14.15% |align="right"| |align="right"|unknown |- bgcolor="white" !align="right" colspan=3|Total valid votes !align="right"|318 !align="right"|100.00% !align="right"| |- bgcolor="white" !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"| |- bgcolor="white" !align="right" colspan=7|<sup>2</sup> Increased to a two-member seat from one.
Cassiar riding was eliminated in the redistribution after the 1900 election. In the 1903 election, this region was represented by the new Atlin and Skeena ridings.