Yaounde — Tensions continue to mount in Chad, with opposition and so-called civil society groups vowing to disrupt Sunday’s local council, regional and parliamentary elections. The groups say the polls will be rigged to favor current President Mahamat Idriss Deby, and are visiting towns and villages warning people to stay home to avoid possible street violence. Chadians in the country’s capital, N’djamena, say uncertainty looms in the central African state ahead of elections slated to take place Sunday. Twenty-three-year old Limana Abba, a student at the university of N’djamena, told VOA via a messaging app Friday that opponents of the