Residency challenges could reduce the number of candidates from ten to eight for District 11. Both candidates face scrutiny over their voter registration addresses, impacting their eligibility. Two candidates for Atlanta’s District 11 City Council seat are fighting to prove they live in the district as a residency challenge heads toward a decision next week. What we know:Community advocate Sherry Williams and candidate Keith Lewis both testified before city officials that they reside in District 11. District 11, which covers much of Southwest Atlanta including Cascade and Campbellton roads, has long been a political power base.