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It’s time for journalists to restore the system of choosing one side or the other — not the revolving door we have seen. Otherwise, journalists — already seen by the public in a negative light — will be viewed as cheerleaders for one political party or the other.

Christopher Harper is a professor at Temple University. He worked for more than 20 years at The Associated Press, Newsweek, ABC News and “20/20.” He can be contacted at Twitter: @charper51.