Same-sex marriage advocates block a street after the California State Supreme Court ruled in San Francisco, Tuesday, May 26, 2009. The California Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but it also decided that the estimated 18,000 gay couples who tied the knot before the law took effect will stay wed. (AP Photo/Paul Sakuma)
Gay rights supporters rally in front of San Francisco City Hall in San Francisco. The state Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but also decided that the estimated 18,000 gay couples who wed before the law took effect will stay married. (Paul Sakuma / AP)
Paul Sakuma / Associated Press
Demonstrators in favor of same-sex marriage wait in front of San Francisco City Hall for the California Supreme Court to rule on the legality of a voter-approved ban on same-sex unions.
A Prop. 8 supporter smiles after the California State Supreme Court ruled in San Francisco, Tuesday. The state Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but also decided that the estimated 18,000 gay couples who wed before the law took effect will stay married. (Paul Sakuma / AP)
Openly gay San Francisco police officer Len Broberg (right) hugs Doug Mezzacapo a married gay man, as they wait in front of San Francisco City Hall for the California State Supreme Court to rule on the legality of a voter-approved ban on same-sex unions in San Francisco. (Paul Sakuma / AP)
Liz Hoadley, a gay woman who is married, cries as she talks to her partner after the California State Supreme Court ruled in San Francisco. (Paul Sakuma / AP)
Marchers make their way down Market Street in to the Supreme Court Building to gather to hear the California Supreme Court decision on Prop 8 in San Francisco. (Lea Suzuki / The Chronicle)
Same-sex marriage demonstrators read the opinion after the California State Supreme Court ruled in San Francisco, Tuesday, May 26, 2009. The state Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but also decided that the estimated 18,000 gay couples who wed before the law took effect will stay married. (AP Photo/Paul Sakuma)
Same-sex marriage demonstrators read the opinion after the California State Supreme Court ruled in San Francisco, Tuesday, May 26, 2009. The state Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but also decided that the estimated 18,000 gay couples who wed before the law took effect will stay married. (AP Photo/Paul Sakuma)
Demonstrators placed signs on a statue of President Abe Lincoln in front of San Francisco City Hall after the California State Supreme Court ruled in San Francisco, Tuesday, May 26, 2009.The court upheld the ban on gay marriage voters approved when they voted in favor of Proposition 8 last fall. (AP Photo/Paul Sakuma)
Eric Manriquez (L) kisses his husband Juan Ribera after being interviewed outside an ACLU news conference in Los Angeles following the California Supreme Court ruling upholding Prop. 8 May 26, 2009. The couple were married June 17, 2008 and their marriage will be allowed to stand according to the courts ruling. REUTERS/Fred Prouser (UNITED STATES SOCIETY)
Justices of the California Supreme Court are shown in this combination of file photographs taken during arguments on Proposition 8 March 5, 2009 in San Francisco, California. From top, left to right are Supreme Court Chief Justice Ronald M. George, Associate Justice Joyce L. Kennard, Associate Justice Carlos R. Moreno, Associate Justice Marvin R. Baxter, Associate Justice Ming W. Chin, Associate Justice Carol A. Corrigan and Associate Justice Kathryn M. Werdegar. The California Supreme Court has decided to uphold Proposition 8, which bans same-sex marriage, in a ruling handed down May 26, 2009. REUTERS/Pool/Files (UNITED STATES SOCIETY IMAGES OF THE DAY)
Same sex couple Shelly Bailes (L) and Ellen Pontac react after hearing that California's Supreme Court upheld a ban on same-sex marriage in San Francisco, California, May 26, 2009. California's supreme court backed a ban on gay marriage on Tuesday, ruling that a voter-approved proposition defining marriage as between a man and a woman could stand in the trend-setting state. REUTERS/Kimberly White (UNITED STATES POLITICS SOCIETY IMAGES OF THE DAY)
Laura Espinosa (R) reacts next to her friend Karen Smith after hearing that California's Supreme Court upheld a ban on same-sex marriage in San Francisco, California, May 26, 2009. California's supreme court backed a ban on gay marriage on Tuesday, ruling that a voter-approved proposition defining marriage as between a man and a woman could stand in the trend-setting state. REUTERS/Kimberly White (UNITED STATES POLITICS SOCIETY)
Elissa Elissa Barrett of the Progressive Jewish Alliance listens to reaction to the California Supreme Court ruling upholding Prop. 8 with tears in her eyes during an ACLU news conference in Los Angeles May 26, 2009. Barrett and her partner are one of 18,000 Gay couples married in California before the ruling by the court. REUTERS/Fred Prouser (UNITED STATES POLITICS SOCIETY)
Diane Olson, right, reacts as she and her spouse Robin Tyler react as they hear the California Supreme Court decision that upheld Proposition 8, which outlawed gay marriage, in Los Angeles Tuesday, May 26, 2009. The court did uphold the validity of same-sex marriages, including that of Olson and Tyler, performed in the five months before the Nov. 8, 2008 election where Proposition 8 was approved by the voters. (AP Photo/Reed Saxon)
Same sex couple Stuart Gaffney (L) and John Lewis hug before hearing that California's Supreme Court upheld a ban on same-sex marriage in San Francisco, California, May 26, 2009. California's supreme court backed a ban on gay marriage on Tuesday, ruling that a voter-approved proposition defining marriage as between a man and a woman could stand in the trend-setting state. REUTERS/Kimberly White (UNITED STATES POLITICS SOCIETY)
Brent Lok, left, and Wade French, hug after the California State Supreme Court ruled in San Francisco, Tuesday, May 26, 2009. The California Supreme Court upheld a voter-approved ban on same-sex marriage Tuesday, but it also decided that the estimated 18,000 gay couples who tied the knot before the law took effect will stay wed. (AP Photo/Paul Sakuma)
Attorney Gloria Allred, left, points to the equal protection clause of the California Constitution, to which she has added 'except for gays and lesbians,' as Robin Tyler watches, right, after the release of the California Supreme Court decision that upheld Proposition 8, which outlawed gay marriage, in Los Angeles Tuesday, May 26, 2009. The court did uphold the validity of same-sex marriages, including that of Olson and Tyler and her spouse Diane Olson, not shown, performed in the five months before the Nov. 8, 2008 election where Proposition 8 was approved by the voters. (AP Photo/Reed Saxon)
A same sex couple leaves San Francisco's Supreme Court after hearing that California's Supreme Court upheld a ban on same-sex marriage in San Francisco, California, May 26, 2009. California's supreme court backed a ban on gay marriage on Tuesday, ruling that a voter-approved proposition defining marriage as between a man and a woman could stand in the trend-setting state. REUTERS/Kimberly White (UNITED STATES POLITICS SOCIETY)