Bernie Sanders is a U.S. senator from Vermont.
Former Virginia Senator Jim Webb is a late addition to the group seeking the Democratic Party nomination for president.
Martin O’Malley is a former governor of the state of Maryland and a former mayor of Baltimore, a city in Maryland.
The 2016 election is Hillary Clinton’s second run for the White House.
Lincoln Chafee is a former senator and governor of the small state of Rhode Island.