- Cameron's miscalculation offers a universal lesson, and Republicans should pay attention
- It is not easy taking the fight to your own party but it can be essential
Editor's note: John McTernan is a former speechwriter for ex-British Prime Minister Tony Blair and ex-communications director to former Australia Prime Minister Julia Gillard. The opinions in this article belong to the author.
(CNN)For the ordinary, unsophisticated observer, the explanation for former British Prime Minister David Cameron's resignation from Parliament is obvious: He was a loser.