For women in Iraq, the coming national elections offer both a promise and a reminder of the difficulty of change in this male-dominated culture. The Constitution calls for at least 25 percent of Parliament’s seats to go to women. But the first women elected in 2005 have had little effect, analysts and women who are members of Parliament say. Now, as the campaign begins for the country’s second post-invasion parliamentary vote, on March 7, some women say a new female political class is starting to emerge. In one sign of this development, 12 women from outside the political system have formed their own party, with a platform built on women’s rights and a jobs program for Iraq’s more than 700,000 widows.