The first of three presidential debates begins tonight at 9pm EDT (6pm PST), and while you can simply view it on pretty much any public TV channel, you can also watch it through Xbox Live through its Election 2012 Hub on the dashboard.
As long as you've got a Gold membership, you can also respond to real-time poll questions presented throughout the debates. My guess is that most gamers lead toward the liberal side, but that's just my speculation. You can also submit poll questions via Twitter with #XboxPoll, though of course those questions will be filtered and reviewed.
If you watch this presidential debate, plus the following two presidential and one vice presidential debates, through the Election 2012 Hub, you will earn a special prize. Watch three of the four debates and you'll get a Halo 4 Warrior Armor avatar.
I wonder how many people will actually obtain it. I'm sure some Halo fans have already tried to figure out how to work the system, like leaving the debates on mute or something. Not that I'm encouraging it...