More (or less) Biden

Not to beat this into the loam, but I was struck by the following quote from the Washington Post's take on Joe Biden's presidential aspirations:

"But if, in fact, I think that I have a clear shot at winning the nomination by this November or December, then I'm going to seek the nomination."

A "clear shot?" What does that mean? What would constitute a clear shot? If no other credible Democrat even tries to get the nomination, then Biden is willing to slap-fight it out with a bunch of also-rans?

Wow.

Is that inspirational, or what? Where do I sign up?