If you'd like to watch the presidential debate tonight you have to be a cable subscriber. I am not but I am a political junkie and I do have a lot of time to search for alternative streams. So far, I found one that allows you to watch without a subscription. It may take a while for it to load, so I would do that well before 9 PM (the start of the debate).
So get out your popcorn and watch the Republican debate!