ward or at-large systems, every two, three or four years, depending on the province. Plurality block voting is used in at-large elections and where wards elect multiple members; otherwise First past the post is used. (London, Ontario did adopt Instant-runoff voting but has been banned from using that system.) A minority of locations in Canada have local political parties or election slates, while most locations elect only independents, or where the candidate has party ties, no party identification is allowed on the ballot. Senate nominee (Alberta) Adopted and attempted reforms Canada is now the only major country in the world to use only First past the post in its federal and provincial elections. But in past times other systems were used or debated. Reforms and attempted reforms are outlined below. Multiple-member districts replaced by single-member districts -- federal elections, all provinces, two territories various dates At various times in the 19th and 20th centuries, federal elections and those held in every province used multi-member districts to elect all or some of its members. The systems used included Block Voting, Single transferable voting, Limited voting and a system where each seat was filled through a separate contest. Now federal elections—and all provincial and territorial elections—use only single-member districts, a situation that came about through electoral reform. Eleven ridings elected multiple MPs (two at a time) at one time or another, between 1867 and 1968. These were Ottawa, West Toronto, Hamilton, Halifax (NS), Cape Breton (NS), Pictou (NS), St. John City and County (NB), Victoria and three in PEI: King's County, Queen's County and Prince County. All the provinces and territories (except Nunavut) once used multiple-member districts. Most of the multiple-member districts elected just two, but others elected 5 to 7 or more. Ten MLAs were elected in Winnipeg from 1920 to 1949. The provinces and territories switched to electing all their members in single-member districts elected through First past the post in these years: Quebec 1867 Ontario 1893 North-West Territories 1894 (see 1891 North-West Territories general election) Yukon 1903 Manitoba 1954 Alberta 1956 New Brunswick 1967 Saskatchewan 1967 Newfoundland and Labrador 1975 Nova Scotia 1978 BC 1990 PEI 1996 (PEI's elections were special cases. Each district elected two members. At one time voters who owned property in the district voted for the Councilman while voters resident in the district joined with the property-owners to vote for the Assemblyman. Later the exact