Canada holds its Parliamentary Election on Monday, October 19. A Canadian web page has been set up to help voters who desire that the incumbent Conservative Party government lose the election. Strategicvoting.ca has a list of 128 districts in which the vote will be close. The web page has polling data for each of these swing districts, so that voters who want to defeat the Conservative Party goverment can know whether the Liberal Party or the New Democratic Party is the strongest opposition party in that district. See the page here.
All of this wouldn’t be necessary if Canada had instant runoff voting, or approval voting, or proportional representation.