This will be interesting to watch. I have heard here that the Brotherhood says they are a minor player in what is going on at the moment and that they are not interested in being "the government". Time will tell.
Summary:
Portraying the Muslim Brotherhood as eager and able to seize power and impose its version of sharia on an unwilling citizenry is a caricature that exaggerates certain features of the Brotherhood and underestimates the extent to which the group has changed over time.
http://www.foreignaffairs.com/artic...-wickham/the-muslim-brotherhood-after-mubarak