2016 Prince Edward Island electoral reform referendum

A non-binding referendum on electoral reform was held in the Canadian province of Prince Edward Island between 27 October – 7 November 2016. This was the second electoral reform referendum to be held in Prince Edward Island, following a vote to maintain the status quo in 2005. The referendum asked which of five voting systems residents would prefer to use in electing members to the Legislative Assembly of Prince Edward Island. The referendum used Instant-runoff voting. Four rounds were held. This brought the options down to just two, where mixed member proportional representation was the majority choice with 55.03% support of the total 35,287 active votes, while first past the post had 45 percent of those votes. Exhausted votes had grown to 1753 by that point. MMP's vote tally at the end was equivalent to 52.42% of the votes cast in the first round.

The plebiscite suffered from low voter turnout. Despite the variety of voting options and a long polling period, the 36.46% turnout was low by PEI standards. The province regularly gets more than 80% turnout in provincial general elections.

Although he had set no threshold of minimum turnout for the plebiscite to be considered binding, Premier Wade MacLauchlan cited the low turnout as a factor in choosing not to proceed with immediate electoral reform.

A third referendum on the subject was held in 2019.