"These results underscore the fact that the audience for these debates are voters who already have a rooting interest in one side or the other", Monmouth University Polling Institute Director Patrick Murray said in a statement about the poll.
According to the poll results, 74 percent of voters in the United States will watch the debate between President Donald Trump and his Democratic rival Joe Biden.
Three percent say that they are "very likely to hear something that will impact their eventual vote choice". Another 10 percent say this is "somewhat likely to happen" and 87 percent say the opposite.
There will be two more debates between Trump and Biden, on 15 October in Miami and on 22 October in Nashville.
Their running mates, Vice President Mike Pence and Senator Kamala Harris, are scheduled to meet in Salt Lake City in October.