"We have such a broad membership, Mr. Rother said.
American's unions agreed to hold broad membership votes by April 15 on the concessions.
But advocates said that the task force's broad membership would give it legitimacy when pushing for changes.
While the middle class is broad, membership in it is still tenuous for many, given high unemployment and a large consumer debt.
As chair of Aldersgate Group he drives for consensus amongst the broad membership of major blue chip companies, membership organisations, NGOs and influential individuals from all parts of the political spectrum.
It was unclear how actively environmental groups might fight to block Ms. Norton's nomination, but the Sierra Club, in particular, commands a broad membership and has shown a willingness to spend large amounts of money in such political battles.
The party had a broad membership drawn from traditional chiefs, academics, and businessmen and proved especially popular with the army, as some 100 retired senior officers joined, including Olusegun Obasanjo, a former military leader of Nigeria (1976 79) who joined the party soon after its inception.
One of them, Tony Woodley, joint leader of Unite, the country's most powerful union, with a broad membership among public sector workers, said Mr. Miliband's triumph was "a clear sign" that the party wanted to "reconnect with the working people" and to stop "the assassination of public services".
But the board of the flight attendants' union rejected its share of concessions because American said the union could not hold a broad membership vote on the new contract, said one union board member who spoke on the condition of anonymity.
The clear leader there is Zing.com, with aggressive management, oodles of funding and a broad membership base, says FutureImage.
