He led the Brotherhood's parliamentary bloc from 2000 to 2005 in addition to serving as president of the Department of Materials Science, Faculty of Engineering at Zagazig University.
Morsy was arrested several times under Mubarak's regime "due to his constantly firm stance against the repressive measures and oppressive practices of the overthrown regime," the party said. At one point, he spent seven months in jail.
Morsy told CNN's Christiane Amanpour during the election campaign that his party sought "an executive branch that represents the people's true will and implements their public interests."
He also said he would support democracy, women's rights and peaceful relations with Israel if he won.
He added, "There is no such thing called an Islamic democracy. There is democracy only. ... The people are the source of authority."