A fact from 1953 Philadelphia municipal election appeared on Wikipedia's Main Page in the Did you know column on 26 November 2016 (check views). The text of the entry was as follows:
Did you know... that in the run-up to the 1953 Philadelphia municipal election, a Democratic nominee died and the office he was running for was abolished?
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Halfway through the article, you clarify what row offices are — "citywide elected offices (also called row offices)" — but you should move this information up to the lead since it's mentioned several times before.
"the Republican organization came roaring back" This isn't a huge concern, but the tone is slightly unencyclopedic.
You described the Republican party in Philadelphia as "once-powerful", but you don't give any context or evidence for how it was so powerful.
"The office was created as one of the good-government reforms intended to reduce the corruption that had previously plagued city government and led to the reform coalition of 1951" You should expand upon this more, because there's no information provided as to why this corruption became a problem that the Philadelphia municipal government tried to fix through creating this office. Who instituted the reforms? What kinds of corruption precipitated these reforms? What is the coalition you mentioned?
* "The Democrats nominated Joseph F. Vogt without opposition, though he had died a month before the primary.[5] In September, the Democratic City Committee nominated State Representative Granville E. Jones in Vogt's place." The timing is confusing. When did Vogt die, and when was the primary?