As expected, one reason Proposition 8, stripping gay couples of marriage equality, is still viable in California is because of strong African-American support. Black Californians back the anti-gay measure by a margin of 20 points, 58 - 38, in the SUSA poll. No other ethnic group comes close to the level of opposition and black turnout is likely to be very high next month.

All this makes it vital, in my opinion, that Barack Obama strongly and unequivocally oppose Proposition 8 in California, rather than keeping mainly quiet as he has done so far. We need him to make an ad opposing it.  This is a core test of whether gay Americans should back Obama as enthusiastically as they have in the last month. If he does not stand up for gay couples now, why should we believe he will when he is in office? And if black Americans are the critical bloc that helps kill civil rights for gays, that will not help deepen Obama's governing coalition. It could tear it apart.

Memo to Obama: make an ad. Speak loudly. Defend equality. Defend it when it might actually lose you some votes. Show us you are not another Clinton.