Elizabeth Warren
US Senator from Massachusetts; Harvard law professor; Chair of Congressional Oversight Panel; 2020 Democratic presidential primary candidate
Democratic Senatorial Campaign Committee
Political Fundraising Committee for Democratic Senatorial Candidates
Jon Tester
US Senator from Montana (2007-present)
Claire McCaskill
NBC/MSNBC contributor, former US Senator from Missouri
Mazie Hirono
US Senator from Hawai (2013-present); former US Rep from Hawaii (2007-2013)
Joe Donnelly
Former US Senator and Representative from Indiana; Biden Nominee to be Ambassador to the Holy See
Heidi Heitkamp
former US Senator from North Dakota
Richard Carmona
Former US Surgeon General; 2012 candidate for US Senate from Arizona
Tim Kaine
Virginia US Senator (2013-present); former Virginia governor; 2016 Clinton VP running mate
Chris Murphy
US Senator from Connecticut (2013-present); Former US Rep. from Connecticut (2007-2013)