<P> At one time, in United Kingdom parliamentary elections, the Returning Officer (if an elector in the constituency) was allowed to give an additional casting vote to decide the election if there was a tie between two or more candidates . An example of this power being used was in the Bandon by - election of 22 July 1831 . This type of casting vote does not now exist: ties in United Kingdom elections are now broken by drawing lots, using a method decided upon by the Returning Officer . </P> <P> In the Canadian provinces of Ontario and New Brunswick, the returning officer still has a casting vote in the event of a tie . Ties in Nova Scotia and Prince Edward Island, as well as the territory of Yukon, are now broken by lots as in the United Kingdom . In the remaining provinces and territories, as well as in federal elections, a tie vote results in a by - election held to elect a new member (who need not have been a candidate in the first election). </P>

When can the speaker of the lok sabha cast his vote