Lewis & Short

dēductor, ōris, m. [deduco].

  1. I. One who brings; a guide, teacher (late Lat.): alicujus, Tert. Apol. 21: veritatis, Tert. Cor. mil. 4.
  2. II. (Acc. to deduco, no. 1. B. 5.) One who accompanies or attends on a candidate for office, an attendant, Q. Cic. Petit. Cons. 9; Plin. Ep. 4, 17, 6.