The race to fill a vacant seat left by disgraced former Dallas City Councilman Dwaine Caraway will continue into December.
There were 13 candidates for the special election at the filing deadline in August. Lester Houston Junior dropped out but remains on the ballot.
The winner will serve the remaining six months of Caraway's term before elections in May.
District 4 includes much of South Oak Cliff and the South Lancaster Road corridor.
The runoff is scheduled for Dec. 11.