JOE BIDEN

• 47th Vice President - served from 2009-2017
• Served as U.S. senator from Delaware from 1973-2009
• Ran unsuccessfully for Democratic nomination for president in 1988 and 2008
  
   

PETE BUTTIGIEG

• 32nd Mayor of South Bend, Indiana - served from 2012-2020
• Lieutenant in the U.S. Navy Reserve from 2019-2017; deployed to Afghanistan in 2014
• First openly gay person to win delegates in a presidential primary
  
   

AMY KLOBUCHAR

• Serves as U.S. senator from Minnesota - has served since 2007
• Served as county attorney for Hennepin County from 1999-2007
• Was partner at two law firms before seeking public office
   

TOM STEYER

• Founded hedge fund firm Farallon Capital in 1986 - stepped down in 2012 
• Founded NextGen America, a nonprofit that combats climate change, in 2013
• Ran a campaign calling for Trump's impeachment from 2017-2019

MICHAEL BLOOMBERG

• 108th Mayor of New York City - served from 2002-2013
• Co-founder of Bloomberg L.P., a financial, software, data and media company with 20,000 employees
• Founder of "Everytown for Gun Safety" gun control group, and has worked with the UN on climate change issues
   

TULSI GABBARD

• U.S. representative from Hawaii's second district - has served since 2013
• Was a vice chair of the Democratic National Committee from 2013-2016
• First female combat veteran to run for president of the United States
   

BERNIE SANDERS

• U.S. senator from Vermont - first elected in 2007
• Served as U.S. House representative from Vermont's at-large district from 1991-2007
• Ran unsuccessfully for Democratic nomination for president in 2016

ELIZABETH WARREN

• Serves as U.S. senator from Massachusetts - first elected in 2012
• Helped create Consumer Financial Protection Bureau in 2010
• Chaired Congressional Oversight Panel that monitored federal stimulus package passed in 2008