In the last election, 89 percent of reporters voted for the incumbent. The content of news programs reveals that reporters allowed the personal biases reflected in this voting pattern to affect their news coverage: 54 percent of coverage concerning the challenger was negative, compared with only 30 percent of that concerning the incumbent.
The statement 'The argument is logically most vulnerable to criticism on the grounds that it ignores the possibility that the electorate's voting behavior is not significantly affected by the content of coverage of candidates' is most strongly supported by the statements above.