Can I elect a survivor annuity for my same-sex spouse?

Yes.  Legally married same-sex spouses of retiring employees are now eligible for a survivor annuity.  Retirees who are in legal same-sex marriages will have two years from the date of the Supreme Court’s decision (i.e., until June 26, 2015) to inform OPM that they have a legal marriage that now qualifies for recognition and elect any changes to their retirement benefits based on their recognized marital status.