On July 31, 2009, the Constitutional Tribunal of Portugal ruled 3-2 that same-sex marriage is not a right guaranteed by the Portuguese Constitution. The decision came after a lesbian couple, Teresa Pires and Helena Paixao, became the first couple to challenge laws regarding same-sex marriage. While the Assembly of the Republic voted overwhelmingly against measures to legalize same-sex marriage in October 2009, the Parliament approved similar legislation in 2010. President Anibal Cavaco Silva ratified that bill, legalizing same-sex marriage in May 2010.
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