31 — The Australian Capital Territory will be the first place in Australia to provide same-sex partners who are parents with "parental leave" under the Parental Leave Legislation Amendment Act 2008.
19 — Argentina approves the first nationwide gay rights measure, extending to same-sex couples the right to claim their deceased partners' pensions.
21 — The Coquille Indian Tribe in Oregon legalizes same-sex marriage. The state of Oregon does not recognize same-sex marriage but as a tribe recognized as a sovereign nation by the United States government the Coquille people are not bound by the state constitution.
California voters ban same-sex marriage with Proposition 8, becoming the first U.S. state to do so after marriages had been legalized for same-sex couples. The amendment to California's constitution passed by a margin of 52% to 47% and overturned the state supreme court's ruling in May in favor of same-sex marriage.
Arkansas voters pass Act 1, which effectively bans adoption by same-sex couples, by a margin of 54% to 41%.
Arizona and Florida voters pass constitutional amendments banning same-sex marriage.
15 — The Constitutional Court of Hungary declares a previously passed registered partnership law—which would be available to both opposite-sex and same-sex couples—unconstitutional, on grounds that it duplicated the institution of marriage for opposite-sex couples. The court ruled that a registered partnership law that only included same-sex couples would be constitutional, and opined that the legislature had a duty to introduce such a law. Prime Minister Ferenc Gyurcsány instructed the Minister of Justice to prepare a new bill that would conform to the Court's decision.
23 — The Hungarian government announces that it will propose a new registered partnership law in line with the Constitutional Court's decision, to be presented to the parliament as early as February 2009.