“This field is going to be winnowed out pretty quickly,” Biden told reporters at a King Taco restaurant in Los Angeles.

Noting the 15 percent threshold for Democratic candidates in Iowa, the first-in-the-nation caucus state, and California, which will award its delegates in early March, Biden said, “It’s going to work its way through relatively quickly for all of us.”

He said he entered the race so late because “the process is already too long.”