(CNN) - The man largely credited for organizing a campaign to defeat John McCain in 2000 now has some advice for the Arizona senator: Stop being so private.
Writing in the Wall Street Journal, former top Bush adviser Karl Rove called McCain "one of the most private individuals to run for president in history," and said the presumptive Republican nominee must reveal more about his unique life story in order to win the presidency.
"Private people like Mr. McCain are rare in politics for a reason," Rove writes. "Candidates who are uncomfortable sharing their interior lives limit their appeal. But if Mr. McCain is to win the election this fall, he has to open up."
Specifically, Rove says McCain should reveal more about his wartime heroics and days as a prisoner of war in Vietnam. He also says McCain should spend more time highlighting the fact he and his wife took in a sick Bangladeshi child in 1991, their adopted daughter Bridget.
"Mr. McCain cannot make this a biography-only campaign – but he can't afford to make it a biography-free campaign either," Rove writes. "Unless he opens up more, many voters will never know the experiences of his life that show his character, integrity and essential decency.
“There is something admirable in his resilience, but he needs to overcome it."