According to Shirley:
The 11th Commandment was a term created by the Chairman of the California Republican Party, Gaylord Parkinson in 1966. Reagan adopted it to mean that one Republican did not attack another Republican’s patriotism, fidelity or sobriety. Politicians like Giuliani hide behind it when criticized by another on issues, which Reagan did plenty against Ford in 1976 and George Bush in 1980.”I'm glad somebody is finally addressing this.