(CNN) During a stop for his book tour in Missoula, Montana, Monday night, former Vice President Joe Biden discussed his 2020 prospects, saying he believes that he is the "most qualified person" to be president, noting a decision is coming in the next two months, and acknowledging he's a "gaffe machine."

"I'll be as straight with you as I can. I think I'm the most qualified person in the country to be president," Biden said to applause at the University of Montana. "The issues that we face as a country today are the issues that have been in my wheelhouse, that I've worked on my whole life."

"No one should run for the job unless they believe that they would be qualified doing the job. I've been doing this my whole adult life, and the issues that are the most consequential relating to the plight of the middle class and our foreign policy are things that I have -- even my critics would acknowledge, I may not be right but I know a great deal about it," he added.

Biden said his family must now decide as a "unit" whether or not they're prepared for a run -- setting a decision time frame of the next six weeks to two months.

"I have two young grandchildren my son left who love me and adore me and want me around. I want to be there to take care of them, so we've got to figure out whether or not this is something we can all do as a family," he said. "We're going to make that decision in the next six weeks to two months, and that's the basis of the decision."

Read More