Katherine Clark represents Massachusetts’s 5th Congressional District. She previously served in the Massachusetts State Senate, the Massachusetts State House of Representatives, and on the Melrose School Committee. She identifies as a Democrat.
2013
–Endorsed Ed Markey (D) for Senator of Massachusetts (won)
2014
–Endorsed Martha Coakley (D) for Governor of Massachusetts (lost general election)
2016
–Endorsed Hillary Clinton (D) for President (lost general election)
–Endorsed Patrick Murphy (D) for Senator of Florida (lost general election)
–Endorsed Kathleen Matthews (D) for Representative of Maryland, 8th District (lost primary)
2018
–Endorsed Katie Porter (D) for Representative of California, 45th District (won)
–Endorsed Lori Trahan (D) for Representative of Massachusetts, 3rd District (won)
–Endorsed Mike Capuano (D) for Representative of Massachusetts, 7th District (lost primary)
2020
–Endorsed Elizabeth Warren (D) for President (lost primary)
–Endorsed Joe Biden (D) for President (won)
–Endorsed Jimmy Panetta (D) for Representative of California, 20th District (won)
2022
–Endorsed Maura Healey (D) for Governor of Massachusetts (won)
–Endorsed Andrea Campbell (D) for Attorney General of Massachusetts (won)
–Endorsed Maggie Hassan (D) for Senator of New Hampshire (won)
–Endorsed Jevin Hodge (D) for Representative of Arizona, 1st District (lost general election)
–Endorsed Adam Gray (D) for Representative of California, 13th District (lost general election)
–Endorsed Jay Chen (D) for Representative of California, 45th District (lost general election)
–Endorsed Maxwell Frost (D) for Representative of Florida, 10th District (won)
–Endorsed Karin Norington-Reaves (D) for Representative of Illinois, 1st District (lost primary)
–Endorsed Daniel Goldman (D) for Representative of New York, 10th District (won)
–Endorsed Shontel Brown (D) for Representative of Ohio, 11th District (won)
2023
–Endorsed Jennifer McClellan (D) for Representative of Virginia, 4th District (won)
2024
–Endorsed Joe Biden (D) for President (withdrew after primary)
–Endorsed Kamala Harris (D) for President (lost general election)
–Endorsed Lisa Blunt Rochester (D) for Senator of Delaware (won)
–Endorsed David Trone (D) for Senator of Maryland (lost primary)
–Endorsed Kirsten Engel (D) for Representative of Arizona, 6th District (lost general election)
–Endorsed Lateefah Simon (D) for Representative of California, 12th District (won)
–Endorsed Adam Gray (D) for Representative of California, 13th District (won)
–Endorsed Rudy Salas (D) for Representative of California, 22nd District (lost general election)
–Endorsed George Whitesides (D) for Representative of California, 27th District (won)
–Endorsed Luz Rivas (D) for Representative of California, 29th District (won)
–Endorsed Will Rollins (D) for Representative of California, 41st District (lost general election)
–Endorsed Derek Tran (D) for Representative of California, 45th District (won)
–Endorsed Sarah McBride (D) for Representative of Delaware, At-Large District (won)
–Endorsed Danny Davis (D) for Representative of Illinois, 7th District (won)
–Endorsed April McClain Delaney (D) for Representative of Maryland, 6th District (won)
–Endorsed Shri Thanedar (D) for Representative of Michigan, 13th District (won)
–Endorsed Ilhan Omar (D) for Representative of Minnesota, 5th District (won)
–Endorsed Cori Bush (D) for Representative of Missouri, 1st District (lost primary)
–Endorsed Rob Menendez (D) for Representative of New Jersey, 8th District (won)
–Endorsed Jamaal Bowman (D) for Representative of New York, 16th District (lost primary)
–Endorsed Summer Lee (D) for Representative of Pennsylvania, 12th District (won)
–Endorsed Lizzie Fletcher (D) for Representative of Texas, 7th District (won)
–Endorsed Henry Cuellar (D) for Representative of Texas, 28th District (won)
–Endorsed Missy Cotter Smasal (D) for Representative of Virginia, 2nd District (lost general election)
–Endorsed Pramila Jayapal (D) for Representative of Washington, 7th District (won)
The Endorsement Project 