Don't Ask Don't Tell - the future?

I am very dissapointed and saddened as a result of today. We lost our only republican vote to repeal DADT. I am Canadian, and I did my best to get people to call their senators, even making a video on Youtube, and protesting on Twitter. Anyways, sad day. I just want to know what will happen now? In the future? What is required again? and when will the next vote approximently be held?