Republican Donald Trump said that he will not make a fourth consecutive run for the U.S. presidency if he loses the Nov. 5 election, saying "that will be it" in an interview released on Sunday.

Asked if he saw himself running again in four years if he is not successful in his third consecutive bid for the White House, the 78-year-old former president told Sharyl Attkisson's "Full Measure" program: "No I don't. I think that will be — that will be it. I don't see that at all. Hopefully, we will be successful."

Trump faces a tight race against Democratic U.S. Vice President Kamala Harris, with polls showing the two neck-and-neck in key battleground states that are likely to be decisive in determining the winner, even as Harris has begun to edge up in nationwide polls.