To form a majority government, a party needs 169 of the House of Commons current 338 seats. To gain official party status, which comes with additional resources, a party needs 12 seats.
The election outcome will depend on whether important voter segments, for each party, get out or stay home, both nationally and in close or swing ridings. The parties have set their platforms and will likely begin to release them gradually during the campaign. While health is always a priority for Canadians, it doesn’t often impact voter decisions at the ballot box.
All of Canada’s registered political parties can be found at the Elections Canada website https://www.elections.ca/content.aspx?section=pol&dir=par&document=index&lang=e where links to each party are listed, providing you with information about their respective 2019 election platforms.