In 1960, the first presidential election I have memory of, the first televised debate took place between Vice President Richard Nixon and Senator John F. Kennedy. Moderated by CBS's Howard K. Smith (one of the famous Murrow boys), viewers who were polled concluded that JFK was the winner of the debate. While radio listeners, concluded that Nixon was the winner.
Back then there were three TV networks, two wire services, four major radio networks, and most cities had at least one daily newspaper.
Fifty-two years later, with the internet and various cable and satellite networks, it is much easier and perhaps more effective to find out virtually everything you need to know about these candidates to make an informed decision.
I would say, perhaps there are some who disagree, that there are crystal clear differences between these two candidates. It should be fairly easy to discern who you want to vote for. There are some news organizations that have opined that the number of undecided voters is smaller than in elections past.
In 1980, I watch the first debate between Reagan and Carter. I was having difficulty choosing between Carter, whom I had voted for in 1976, and John anderson, who was running as a third party candidate. That debate caused me to make a major mistake. As a result I pulled the lever for John Anderson, who a had snowball's chance in hell of being elected President. I haven't voted for a third party candidate since, in any election.
If your mind is already made up, watching the debates are akin to slowing down at a car accident to see the battered and broke car wreckage and perhaps bodies. Your candidate could put his foot in his mouth. Or the other candidate could do the same.
There is little or no substance, as these event have been so choreographed. The questions and answers are fatuous, there are no opportunity for follow ups, and the expectations are set so low, that not falling off the stage will be considered a win.
Better to do something different and better with your time. Like read a book. May I suggest The Selling of a President, by Joe McGinniss. You see there's this guy named Roger Ailes...never mind, read the book. I don;t want to spoil it for you. You can't always see the You Tube debate highlights, tomorrow.