Candidates (O)

Charles Franklin Ogden

• 1920 – Kentucky’s 5th congressional district (R) – won

Daniel M. Ogden, Jr.

• 1976 – Colorado’s 4th congressional district (D) – lost

Michael S. Ogden

• 1986 – Pennsylvania’s 17th congressional district (D) – lost

James B. Ogg

• 1928 – California’s 9th congressional district (D) – lost

Thomas F. Ogilvie

• 1936 – New Jersey’s 2nd congressional district (End Poverty) – lost
• 1948 – New Jersey’s 2nd congressional district (Prog.) – lost

James Ogle

• 1993 – California’s 17th congressional district (Special) (I) – lost

William Andrew Ogles III

• 2022 – Tennessee’s 5th congressional district (R) – won

Thomas V. Ognibene

• 1986 – New York’s 9th congressional district (CON) – lost
• 1990 – New York’s 9th congressional district (CON) – lost

Thomas Oh

• 2018 – Virginia’s 8th congressional district (R) – lost

George W. Ohis

• 1934 – United States Senate (Pennsylvania) (Industrial Labor) – lost

Howard C. Ohlendorf

• 1964 – Missouri’s 3rd congressional district (R) – lost
• 1974 – Missouri’s 2nd congressional district (R) – lost

Sigurd H. Ohtness

• 1934 – Illinois’ 7th congressional district (Proh.) – lost

William R. Ojala

• 1974 – Minnesota’s 8th congressional district (Justice) – lost

Miriam Ojeda

• 1984 – California’s 26th congressional district (R) – lost

Richard Neese Ojeda II

• 2018 – West Virginia’s 3rd congressional district (D) – lost

Bayo Olabisi

• 2014 – New Jersey’s 2nd congressional district (I) – lost

Evelyn K. Olafson

• 1974 – Washington’s 3rd congressional district (Labor) – lost

Alphonze Olbrick

• 1926 – Pennsylvania’s 4th congressional district (S) – lost

Jack Olchin

• 1984 – New York’s 5th congressional district (L) – lost

Selma Olchin

• 2000 – New York’s 3rd congressional district (L) – lost

Paul Oldenburg

• 1948 – Michigan’s 17th congressional district (S) – lost

William Allan Oldfield

• 1920 – Arkansas’ 2nd congressional district (D) – won
• 1922 – Arkansas’ 2nd congressional district (D) – won
• 1924 – Arkansas’ 2nd congressional district (D) – won
• 1926 – Arkansas’ 2nd congressional district (D) – won
• 1928 – Arkansas’ 2nd congressional district (D) – won

George W. Oldham

• 1924 – West Virginia’s 1st congressional district (D) – lost
• 1926 – West Virginia’s 1st congressional district (D) – lost

L. E. Oldham

• 1932 – Mississippi’s 2nd congressional district (R) (Black and Tan) – lost

Andrew Olding

• 2020 – New Hampshire’s 2nd congressional district (L) – lost

Glenn Olds

• 1986 – United States Senate (Alaska) (D) – lost

O. Henry Oleen

• 1944 – Oregon’s 1st congressional district (D) – lost

Arnold J. Olenick

• 1950 – New York’s 3rd congressional district (American Labor) – lost

Michael C. Olenicziak

• 1996 – Michigan’s 1st congressional district (L) – lost

Anna Dickie Olesen

• 1922 – United States Senate (Minnesota) (D) – lost

Jon Oleson

• 2010 – Minnesota’s 3rd congressional district (IND) – lost

Moissaye Joseph Olgin

• 1926 – New York’s 23rd congressional district (Workers) – lost
• 1930 – New York’s 10th congressional district (Comm.) – lost
• 1932 – New York’s 24th congressional district (Comm.) – lost
• 1934 – New York’s 23rd congressional district (I) – lost

Oliason

• 1932 – United States Senate (Idaho) (Liberty) – lost

James Randolph Olin

• 1982 – Virginia’s 6th congressional district (D) – won
• 1984 – Virginia’s 6th congressional district (D) – won
• 1986 – Virginia’s 6th congressional district (D) – won
• 1988 – Virginia’s 6th congressional district (D) – won
• 1990 – Virginia’s 6th congressional district (D) – won

Vernon E. Olin

• 1954 – New York’s 34th congressional district (D, Liberal) – lost

Henry W. Olinger

• 1922 – Illinois’ at large congressional district (FL) – lost

George Olishkewych

• 1976 – Wisconsin’s 7th congressional district (American) – lost
• 1978 – Wisconsin’s 7th congressional district (CON) – lost

Phil Oliva

• 2016 – New York’s 18th congressional district (R, CON, Ref.) – lost

Laura Olivas

• 2021 – New Mexico’s 1st congressional district (Special) (W/I) – lost

Bill Oliver

• 2010 – Texas’ 31st congressional district (L) – lost

Bryce Oliver

• 1946 – New York’s 29th congressional district (American Labor) – lost

Craig Oliver

• 1994 – United States Senate (Utah) (I) – lost

Craig S. Oliver

• 1986 – United States Senate (Utah) (D) – lost

F. A. Oliver

• 1950 – Iowa’s 1st congressional district (Proh.) – lost
• 1952 – Iowa’s 1st congressional district (Proh.) – lost

Frank Oliver

• 1922 – New York’s 23rd congressional district (D) – won
• 1924 – New York’s 23rd congressional district (D) – won
• 1926 – New York’s 23rd congressional district (D) – won
• 1928 – New York’s 23rd congressional district (D) – won
• 1930 – New York’s 23rd congressional district (D) – won
• 1932 – New York’s 23rd congressional district (D) – won

Georgianna W. Oliver

• 2008 – Oklahoma’s 1st congressional district (D) – lost

James Churchill Oliver

• 1936 – Maine’s 1st congressional district (R) – won
• 1938 – Maine’s 1st congressional district (R) – won
• 1940 – Maine’s 1st congressional district (R) – won
• 1954 – Maine’s 1st congressional district (D) – lost
• 1956 – Maine’s 1st congressional district (D) – lost
• 1958 – Maine’s 1st congressional district (D) – won
• 1960 – Maine’s 1st congressional district (D) – lost

Julie Oliver

• 2018 – Texas’ 25th congressional district (D) – lost
• 2020 – Texas’ 25th congressional district (D) – lost

Leon S. Oliver

• 1922 – Massachusetts’ 3rd congressional district (Consumer’s Nonpartisan) – lost

Mohammed Oliver

• 1980 – United States Senate (Alabama) (SW) – lost