I want to know the answer to the following question:
Why did Mustafa A.G. Abushagur not become prime minister?
All the background I'm provided with is that "The GNC proceeded to elect Mohammed Magariaf as president of the chamber, and then voted Mustafa A.G. Abushagur as Prime Minister; when Abushagar failed to gain congressional approval, the GNC instead elected Ali Zeidan to the position.". Is that enough to answer the question?
Answer: yes