There is nothing wrong, then, if a woman is appointed as head of an institution, or member of parliament as long as it is within the interests of the Muslim society.
Conclusion:
1. According to Sheikh Al-Qaradawi's fatwa, you are blameless for nominating yourself as a candidate in the elections of MSA presidency, for it is not a caliphate office.
2. It was the duty of those brothers who dropped out of the association to give you sincere advice and to explain why they did so.
3. Muslim associations in the west shoulder a great responsibility, namely caring about the welfare of Islam and Muslims, and therefore Muslims should support them irrespective of the gender of their leaders.
4. Muslims now are in need of understanding what Muslim scholars call as fiqh al-awlawiyyat or discernment of priorities, which requires Muslims to concern themselves with the fundamental issues and disregard trivialities. Thus, it was the duty of the brothers of the MSA to be more active and support the association in order to bring forth its avowed fruits.
5. The questioner, the ex-president of the MSA, was put in her position by the voters, and so it became binding upon all members of the association to give loyalty to her as long as there was nothing unlawful committed.