Leonard Blaschak
- 1968 – New Jersey’s 10th congressional district (Citizens) – lost
Chuck Blasdel
- 2006 – Ohio’s 6th congressional district (R) – lost
Karen Blasdell-Wilkinson
- 1994 – Michigan’s 9th congressional district (NL) – lost
- 1998 – California’s 29th congressional district (NL) – lost
- 2000 – California’s 38th congressional district (NL) – lost
Lawrence J. Blasi
- 1960 – Illinois’ 7th congressional district (R) – lost
Gregory J. Blass
- 1986 – New York’s 1st congressional district (R, CCALILCO) – lost
Piotr Blass
- 2004 – United States Senate (Florida) (W/I) – lost
- 2010 – United States Senate (Florida) (W/I) – lost
- 2012 – United States Senate (Florida) (W/I) – lost
Anthony Blasting
- 1952 – New York’s 34th congressional district (Liberal) – lost
Joe Blatchford
- 1968 – California’s 17th congressional district (R) – lost
John Anton Blatnik
- 1946 – Minnesota’s 8th congressional district (DFL) – won
- 1948 – Minnesota’s 8th congressional district (DFL) – won
- 1950 – Minnesota’s 8th congressional district (DFL) – won
- 1952 – Minnesota’s 8th congressional district (DFL) – won
- 1954 – Minnesota’s 8th congressional district (DFL) – won
- 1956 – Minnesota’s 8th congressional district (DFL) – won
- 1958 – Minnesota’s 8th congressional district (DFL) – won
- 1960 – Minnesota’s 8th congressional district (DFL) – won
- 1972 – Minnesota’s 8th congressional district (DFL) – won
- 1962 – Minnesota’s 8th congressional district (DFL) – won
- 1964 – Minnesota’s 8th congressional district (DFL) – won
- 1966 – Minnesota’s 8th congressional district (DFL) – won
- 1968 – Minnesota’s 8th congressional district (DFL) – won
- 1970 – Minnesota’s 8th congressional district (DFL) – won
Genevieve Blatt
- 1964 – United States Senate (Pennsylvania) (D) – lost
M. Myer Blatt
- 2002 – Indiana’s 2nd congressional district (W/I) – lost
Chet Blaylock
- 1984 – Montana’s 2nd congressional district (D) – lost
David H. Blazer
- 1972 – New York’s 27th congressional district (D) – lost
Coleman Livingston Blease
- 1924 – United States Senate (South Carolina) (D) – won
Bill Bledsoe
- 2016 – United States Senate (South Carolina) (C, L) – lost
- 2020 – United States Senate (South Carolina) (C) – lost
Steward Bledsoe
- 1972 – Washington’s 4th congressional district (R) – lost
Eric V. Bleicken
- 1998 – Massachusetts’ 10th congressional district (R) – lost
- 2000 – Massachusetts’ 10th congressional district (R) – lost
Roman Blenski
- 1974 – United States Senate (Wisconsin) (I) – lost
Gerald Blessey
- 1976 – Mississippi’s 5th congressional district (D) – lost
Martin W. Blessinger
- 2006 – New York’s 4th congressional district (R, CON) – lost
Kenneth E. Blevens, Sr.
- 1992 – United States Senate (New Hampshire) (I) – lost
- 1996 – United States Senate (New Hampshire) (L) – lost
- 2002 – United States Senate (New Hampshire) (L) – lost
- 2004 – United States Senate (New Hampshire) (W/I) – lost
- 2006 – New Hampshire’s 2nd congressional district (L) – lost
- 2008 – United States Senate (New Hampshire) (L) – lost
- 2010 – United States Senate (New Hampshire) (L) – lost
- 2022 – United States Senate (Oklahoma) (L) – lost
Jeffrey J. Blevins
- 2010 – Ohio’s 16th congressional district (L) – lost
Linda Blevins
- 1984 – South Carolina’s 5th congressional district (L) – lost
Lloyd H. Blevins
- 1974 – Tennessee’s 1st congressional district (D) – lost
- 1976 – Tennessee’s 1st congressional district (D) – lost
Walter Blevins
- 1994 – Kentucky’s 5th congressional district (D) – lost
Alex Blewett
- 1964 – United States Senate (Montana) (R) – lost
Thomas Jerome Bliley, Jr.
- 1980 – Virginia’s 3rd congressional district (R) – won
- 1982 – Virginia’s 3rd congressional district (R) – won
- 1984 – Virginia’s 3rd congressional district (R) – won
- 1986 – Virginia’s 3rd congressional district (R) – won
- 1988 – Virginia’s 3rd congressional district (R) – won
- 1990 – Virginia’s 3rd congressional district (R) – won
- 1992 – Virginia’s 7th congressional district (R) – won
- 1994 – Virginia’s 7th congressional district (R) – won
- 1996 – Virginia’s 7th congressional district (R) – won
- 1998 – Virginia’s 7th congressional district (R) – won
Alan John Blinken
- 2002 – United States Senate (Idaho) (D) – lost
George R. Bliss
- 1934 – California’s 10th congressional district (R) – lost
- 1936 – California’s 10th congressional district (R) – lost
Helen L. Bliss
- 1966 – United States Senate (New Hampshire) (W/I) – lost
- 1974 – New Hampshire’s 2nd congressional district (D) – lost
Hubert D. Bliss
- 1948 – New York’s 45th congressional district (D) – lost
Mark Bliss
- 2016 – Missouri’s 4th congressional district (L) – lost
- 2018 – Missouri’s 4th congressional district (L) – lost
(Mrs.) Iris Faircloth Blitch
- 1954 – Georgia’s 8th congressional district (D) – won
- 1956 – Georgia’s 8th congressional district (D) – won
- 1958 – Georgia’s 8th congressional district (D) – won
- 1960 – Georgia’s 8th congressional district (D) – won
Roger Blobaum
- 1970 – Iowa’s 4th congressional district (D) – lost
Adam F. Bloch
- 1922 – Illinois’ 2nd congressional district (D) – lost
Edward James Bloch
- 1984 – New York’s 24th congressional district (D) – lost
Arthur R. Block
- 1992 – New York’s 8th congressional district (New Alliance) – lost
Forrest R. Block
- 1936 – Ohio’s 13th congressional district (D) – lost
Richard R. Block
- 1968 – Pennsylvania’s 3rd congressional district (R) – lost
Russell Block
- 1970 – Washington’s 7th congressional district (SW) – lost
Wallace A. Bloedorn
- 1940 – Wisconsin’s 7th congressional district (D) – lost
Christian B. Blohm
- 1924 – New Jersey’s 12th congressional district (Workers) – lost
Henning A. Blomen
- 1946 – United States Senate (Massachusetts) (SL) – lost
- 1948 – United States Senate (Massachusetts) (SL) – lost
S. L. Blomgren
- 1922 – South Carolina’s 1st congressional district (R) – lost
Pierre Blondeau
- 1994 – United States Senate (Texas) (L) – lost
Barbara Blong
- 1994 – United States Senate (California) (G) – lost
Ken Bloodworth
- 1990 – Tennessee’s 7th congressional district (D) – lost
Kenneth Wayne Bloodworth
- 1986 – Tennessee’s 5th congressional district (I) – lost
- 1988 – Tennessee’s 7th congressional district (D) – lost
Allan E. Bloom
- 1972 – Indiana’s 4th congressional district (R) – lost
Elaine Bloom
- 2000 – Florida’s 22nd congressional district (D) – lost
