<page_title> By-elections to the 42nd Canadian Parliament </page_title> <section_title> Overview </section_title> <table> <cell> Calgary Heritage <col_header> By-election </col_header> </cell> <cell> Stephen Harper <col_header> Incumbent </col_header> </cell> <cell> Conservative <col_header> Party </col_header> </cell> </table>
A second was called due to the resignation of Stephen Harper (Conservative, Calgary Heritage).