From their schedule:

Logo and Human Rights Campaign Foundation present this historic and first-ever live televised U.S. Presidential candidate forum on issues of importance to the LGBT community, with the leading 2008 Democratic presidential candidates including Hillary Clinton, Chris Dodd, John Edwards, Mike Gravel, Dennis Kucinich, Barack Obama, and Bill Richardson.

Airs at 9pm ET. If you don’t get LOGO you can watch it here.