GENEVA  - Swiss citizens voted in a referendum on whether to strengthen a smoking ban in indoor workplaces and public spaces, with opponents decrying the move as a “witchhunt.” Polls showed the country deeply divided on the eve of the referendum over the move instigated by the Swiss Pulmonary League, which aimed at clearing up confusion about the current legislation. In the latest survey published last week 52 percent opposed the initiative, against 41 percent in favour. and seven percent undecided. Switzerland introduced a federal ban on smoking in enclosed workplaces and public spaces more than two years ago, but the law allowed for a number of exceptions and has been applied unevenly across the country’s 26 cantons. While eight cantons, including Geneva, already have a total ban on indoor smoking in workplaces such as restaurants and bars, and public spaces like hospitals, the remaining 18 cantons apply the law less restrictively. In 11 cantons, smokers are allowed to indulge their habit in small bars, cafes and restaurants of less than 80 square metres and in establishments with smoking rooms with customer service. In the other seven cantons, smoking is allowed in dedicated smoking rooms. On Sunday “the Swiss will vote to standardise across Switzerland what is already the norm in eight cantons: a total protection against second-hand smoke in closed environments,” Jean-Charles Rielle, a physician and a member of the committee behind the proposal, told AFP. But some businesses call the move “a witch-hunt, a hygienism pushed to extremes”, according to Laurent Terlinchamp, president of Geneva’s association of cafe owners, restaurateurs and hoteliers.