Question: The 2017 Detroit mayoral election will be held on which date, to elect the Mayor of Detroit, seeking a second term is the incumbent American politician and businessman, Michael Edward Duggan?
Sentence (from "San Diego mayoral election, 1935"): In the primary election, Percy J. Benbough and A. Ray Sauer Jr. received the most votes and advanced to a runoff election.
Relevant evidence: No