If you want to get married before the November election, plan to do so in Massachusetts. The legislature has repealed the law that effectively banned out-of-state couples from marrying there, and Governor Patrick will sign the repeal shortly.
Because Californians are voting up or down in November on retaining marriage for same-sex couples, any marriage there carries a risk. If a ban on same-sex marriage passes, all the marriages performed before then will be under a cloud.
On the other hand, the skies are clear in Massachusetts. Thanks to the fine work of Mass Equality and a lot of straight allies, marriage for same-sex couples is secure there. So choose the Berkshires, not Berkeley, and breathe easy.