Sentence:  Council says the mayor and a former councilman may have engaged in a "<WSD>quid pro quo</WSD>." / ... / Council says, according to a handwritten note, Fey offered to support a pay raise for Mayor Ellis if Ellis would support a raise or a job appointment for Fey's wife, Gina. 
Meaning of the word marked with <WSD> tags:  A usually non-monetary exchange transaction, or series or process of exchange transactions.