I am not sure about [this quote](http://books.google.com/books?id=rS8qbPLCbioC&pg=PA295&lpg=PA295&dq=%22acted+in+the+benefit+of%22&source=bl&ots=QIUTw4quMd&sig=IzbmlUJSex8-8uqU8Xe1_ECyTYg&hl=en&sa=X&ei=gOU5ULX7Lu3OigLY34HABA&ved=0CC0Q6AEwAA#v=onepage&q=%22acted%20in%20the%20benefit%20of%22&f=false): 

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> As to whether the president acted **for the benefit of** the majority, 35 percent of the respondents said that he did not, 30 percent that he only partly acted **in the benefit of** the majority. 
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Shouldn’t it be *to the benefit of* instead of *in the benefit of* ? And what about *for the benefit of* ?