From the Los Angeles Times:

Overall, the poll showed a majority of voters in Los Angeles support the right of same-sex couples to legally marry, with 56% in favor and 37% opposed.... White voters were most emphatic in supporting same-sex marriage, with 68% approving of it and 27% opposing. African American voters were almost the opposite, with 54% opposing same-sex unions and 37% supporting them. Opposition to gay marriage by African Americans was widely seen as a major factor contributing to the passage of Proposition 8. In the current poll, Latinos were split, with 45% supporting same-sex marriage and 46% opposing.