In an unsolicited e-mail to Countdown, Warren Mitofsky wrote that he was “struck by the misinformation” in our program. He heads Mitofsky International, which along with Edison Media Research, conducted the election night exit polling for the television networks and the Associated Press. I referred to the variance among the early and late exit polls, and the voting. Insisting “there were no early exit polls” released by his company or Edison, Mr. Mitofsky wrote “the early release came from unauthorized leaks to bloggers who posted misinformation.”Mitofsky compared those leaks to “the score at half time at a football game” and...