20 candidates

Twenty Democrats have declared their candidacy for the presidency of the United States. It is the largest field of candidates for one party in history. All are seeking their party’s nomination.

The diversity of the candidates is impressive. Age, gender, sexual orientation, ethnic backgrounds and philosophies are vastly different.

Another difference is experience. Some have little experience in any field, be it politics, business or government. In a few cases, hubris seems to be the reason for the run rather than qualifications.

The contenders are a true mixed bag, and each of them will have to...