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Ahead on the 6/26 Maddow show

Tonight's guests include:

Sandra Stier and Kris Perry, the plaintiffs in the Hollingsworth v. Perry case who challenged and helped defeat Proposition 8 in the Supreme Court today

Roberta Kaplan, Edith Windsor’s attorney, argued the DOMA case before the Supreme Court

Cecile Richards, national president of Planned Parenthood

While we wait for tonight's video preview, here is your hold music.