he plebiscite question for Calgarians was: Are you in favour of reintroducing fluoridation of the municipal water supply? The Yes side took an early lead and kept winning. By the time all polls reported, the Yes side had 62 per cent of the vote. The No side had 38 per cent. It's an issue Calgary residents voted on in 1998 and 1989, when they voted Yes to fluoride. Calgary's city council chose to stop adding fluoride to the city's water supply in 2011.