The Liberal government will announce Wednesday the creation of an all-party committee to study electoral reform.
Liberal House Leader Dominic LeBlanc and Democratic Institutions Minister Maryam Monsef have scheduled a news conference to unveil the initiative that the Liberals promised during the last election campaign.
"Our government is determined to meet our commitment that 2015 was the last election to use a first-past-the-post system," Ms. Monsef said in a statement.
"It's time to remind Canadians that they are in charge. Modernizing our voting system will provide all of us with an opportunity to participate more fully in shaping our country."
Critics of the current first-past-the-post system say it mutes the voices of millions of voters because it ignores the will of everyone who didn't vote for the winner.
Prime Minister Justin Trudeau has said a voting system should include those voters. One option is a ranked-ballot system used in Australia.
The New Democrats, however, say they prefer mixed-member proportional representation rather than the ranked ballot.
The Conservatives say electoral reform should not proceed without a referendum.
One survey suggested a ranked ballot would have given the Liberals an even greater majority in the 2015 election than the one they obtained with 39.5 per cent of the popular vote.