In the early 20th century, Manitoba became a leader in electoral reform.   Shortly after the general strike, the government introduced preferential ballots in Winnipeg.  

In 1920, a proportional ranked ballot system known as the single transferable was used to elect the 10 legislators for Winnipeg, allotting a seat to each party per 9% of the vote they got.

In 1924, a second electoral reform bill was passed and the alternative vote was used in 1927 for all of the ridings in Manitoba outside of Winnipeg.