Former Vice President Joe Biden said on Friday that if he had run for president in 2016 he could have won.
Biden told students at Colgate University in New York that the Democratic primary would have been "very difficult."
Biden said his son Beau's battle with brain cancer kept him out of the race.
Biden said anyone who runs for president should be able to "look the public in the eye and promise you they can give you 100 percent," the Observer-Dispatch of Utica reported.
The former vice president says that he doesn't regret not running, but added, "Do I regret not being president? Yes."
Biden also added that he hopes President Donald Trump "grows into the job a little bit."
The Associated Press contributed to this report.