CAIRO - Egypt's already bumpy political transition could be stopped in its tracks on Thursday when a court considers a law that could disqualify one of two run-off candidates in this weekend's presidential election.

The Supreme Constitutional Court is expected to decide on the validity of the law passed by the Islamist-led parliament that sought to bar Ahmed Shafiq, Hosni Mubarak's last prime minister, from the vote pitting him against the Muslim Brotherhood's Mohamed Morsy.

The court will also review the legality of rules that governed a parliamentary election earlier this year in which Islamists swept up seats.

A judicial body has already recommended that both laws be overturned, allowing Shafiq to continue his bid and possibly dissolving the parliament. The court is not bound to follow that advice, but it is a likely indication of the ruling.

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