Bernie Sanders
US Senator and former representative from Vermont, 2020 Democratic presidential primary candidate
Barack Obama
44th President of the United States
Sherrod Brown
Democratic US Senator from Ohio (2007-present); former US Rep from Ohio (1993-2007)
Claire McCaskill
NBC/MSNBC contributor, former US Senator from Missouri
Tammy Baldwin
US Senator from Wisconsin (2013-present); former US Rep from Wisconsin (1999-2013)
John Kerry
68th US Secretary of State, Senator from Massachusetts
Debbie Stabenow
US Senator and Representative from Michigan (2001-present)
Jon Tester
US Senator from Montana (2007-present)
Joe Sestak
2020 Dem. presidential candidate, former US Representative from Pennsylvania, retired 3-star vice admiral