They will address the convention on Monday evening, July 13, the opening day of the gathering.
Many Republicans, according to the associate, had wanted the former President to address the convention.
Some government officials who addressed the convention added their own regrets about warnings gone unheeded.
Her stature within the movement was such that she often addressed the national convention.
The Texan was given a chance to address the convention with the understanding that it would be his farewell speech.
"Hello, Democrats," he says, addressing the convention for the first time.
"But Laura Bush is planning to address the convention as his representative."
Senator Quayle had not been expected to address the convention tonight.
But before addressing the convention on Tuesday he said, "I need to think about it more."
Then, he said, a person who has had that experience might be beamed in by satellite to address the convention.