US presidential elections since 1900 (all primary candidates)

[LAKISYLVANIA]

1900: William Jennings Bryan
1904: Theodore Roosevelt
1908: William Jennings Bryan
1912: Eugene V. Debs
1916: Robert M. La Folette
1920: Hiram Johnson
1924: Robert M. La Folette
1928: George W. Norris
1932: Franklin D. Roosevelt
1936: Franklin D. Roosevelt
1940: Franklin D. Roosevelt
1944: Franklin D. Roosevelt
1948: Henry A. Wallace
1952: Estes Kefauver
1956: Estes Kefauver
1960: Hubert Humphrey
1964: Lyndon B. Johnson
1968: Eugene McCarthy
1972: Edmund Muskie
1976: Franck Church
1980: Ted Kennedy
1984: Jesse Jackson
1988: Jesse Jackson
1992: Ross Perot
1996: Ross Perot
2000: Ralph Nader
2004: Dennis Kucinich
2008: Mike Gravel
2012: Barack Obama
2016: Bernie Sanders
2020: Bernie Sanders

[GeneralMacArthur]

I don't think the country would even still exist in 2020 if those were our presidents in the 20th century.

[Dr. MB]

I'm gonna limit it to candidates who got more than 1% of the popular vote/convention vote.

1900: William Jennings Bryan
1904: Theodore Roosevelt
1908: Eugene Debs
1912: Eugene Debs
1916: Allan Benson
1920: Hiram Johnson
1924: Robert M. La Follette
1928: George W. Norris
1932: Franklin D. Roosevelt
1936: Franklin D. Roosevelt
1940: Franklin D. Roosevelt
1944: Franklin D. Roosevelt
1948: Henry Wallace
1952: Earl Warren
1956: Lyndon B. Johnson
1960: Lyndon B. Johnson
1964: Lyndon B. Johnson
1968: Eugene McCarthy
1972: George McGovern
1976: Frank Church
1980: Ted Kennedy
1984: Jesse Jackson
1988: Jesse Jackson
1992: Tom Harkin
1996: Ralph Nader
2000: Ralph Nader
2004: Howard Dean
2008: Hillary Clinton
2012: Barack Obama
2016: Bernie Sanders
2020: Bernie Sanders

[Brother Jonathan]

1900: William McKinley
1904: Theodore Roosevelt
1908: Joseph Cannon
1912: William Howard Taft
1916: Elihu Root
1920: Frank Lowden
1924: Calvin Coolidge
1928: Charles Curtis
1932: John Nance Garner
1936: William Borah
1940: Robert Taft
1944: John W. Bricker
1948: Robert Taft
1952: Robert Taft
1956: Dwight D. Eisenhower
1960: Adlai Stevenson
1964: Barry Goldwater
1968: Richard Nixon
1972: John Ashbrook
1976: Ronald Reagan
1980: Ronald Reagan
1984: Ronald Reagan
1988: George H. W. Bush
1992: Paul Tsongas
1996: Phil Gramm
2000: John McCain
2004: Joe Lieberman
2008: John McCain
2012: Mitt Romney
2016: Ted Cruz
2020: Bill Weld

[VPH]

1900: William Jennings Bryan
1904: William Randolph Hearst
1908: William Jennings Bryan
1912: Teddy Roosevelt
1916: Woodrow Wilson I guess?
1920: Al Smith
1924: Robert M. LaFollette
1928: George W. Norris or Al Smith
1932: Franklin D. Roosevelt
1936: Franklin D. Roosevelt
1940: Franklin D. Roosevelt
1944: Franklin D. Roosevelt
1948: Harry Truman
1952: Estes Kefauver
1956: Estes Kefauver
1960: John F. Kennedy
1964: Lyndon B. Johnson
1968: Robert F. Kennedy
1972: Hubert Humphrey
1976: Fred Harris or Sargent Shriver
1980: Ted Kennedy
1984: John Glenn or Walter Mondale
1988: Richard Gephardt
1992: Tom Harkin
1996: Ross Perot
2000: Al Gore
2004: Richard Gephardt
2008: Barack Obama
2012: Barack Obama
2016: Jim Webb
2020: Joe Biden or Amy Klobuchar

[OSR stands with Israel]

Party Affiliation(since Oregon is a closed primary state):
1900-1932: Republican
1932-1952: Democratic
1952-Present : Republican

This is also assuming everyone who ran at convention ran in primary too

1900: William McKinley
1904: Teddy Roosevelt
1908: William Howard Taft
1912: Teddy Roosevelt
1916: Charles Hughes
1920:  Frank Lowden
1924 : Calvin Coolidge
1928: Frank Lowden
1932-1944 :FDR
1948: Harry Truman
1952-1956: Dwight Eisenhower
1960: Richard Nixon
1964:  George Romney
1968-1972: Richard Nixon
1976-1984: Ronald Reagan
1988-1992: George HW Bush
1996: Bob Dole ( Pete Wilson at first but he’s ran a horrible campaign so I would switch over to Dole)
2000: John McCain
2004 : George W Bush
2008-2012: Mitt Romney
2016: John Kasich
2020: Abstain(I’m gonna vote in the senate GOP primary so I won’t be able to vote in the Presidential primary )

[😥]

1900: William Jennings Bryan
1904: Theodore Roosevelt
1908: William Jennings Bryan
1912: Theodore Roosevelt
1916: Woodrow Wilson
1920: Warren Harding
1924: Robert M. LaFollette
1928: Charles Curtis
1932: Franklin D. Roosevelt
1936: Franklin D. Roosevelt
1940: Franklin D. Roosevelt
1944: Franklin D. Roosevelt
1948: Harry Truman
1952: Estes Kefauver
1956: Estes Kefauver
1960: Lyndon B. Johnson
1964: Lyndon B. Johnson
1968: Nelson Rockefeller
1972: Edmund Muskie
1976: Birch Bayh
1980: Jerry Brown
1984: Walter Mondale
1988: Al Gore
1992: Tom Harkin
1996: Bill Clinton
2000: Al Gore
2004: Wesley Clark
2008: Hillary Clinton
2012: Barack Obama
2016: Hillary Clinton
2020: Joe Biden or Amy Klobuchar

[Orser67]

Limiting to candidates who meet my subjective criteria of being plausible nominees, and allowing myself some hindsight (e.g. to know that Taft would end up siding with the conservative wing of the party as president).

1900: William McKinley
1904: Theodore Roosevelt
1908: Charles Evans Hughes
1912: Woodrow Wilson
1916: Woodrow Wilson
1920: James M. Cox
1924: Gifford Pinchot
1928: Herbert Hoover
1932: Franklin D. Roosevelt
1936: Franklin D. Roosevelt
1940: Franklin D. Roosevelt
1944: Franklin D. Roosevelt
1948: Harry Truman
1952: Adlai Stevenson
1956: Adlai Stevenson
1960: Hubert Humphrey
1964: Lyndon B. Johnson
1968: Hubert Humphrey
1972: Edmund Muskie
1976: Mo Udall
1980: Ted Kennedy
1984: Walter Mondale
1988: Al Gore
1992: Tom Harkin
1996: Bill Clinton
2000: Bill Bradley
2004: John Kerry
2008: Barack Obama
2012: Barack Obama
2016: Hillary Clinton
2020: Not-Sanders

[West_Midlander]

1900: McKinley
1904: Roosevelt
1908: Taft
1912: Roosevelt
1916: Roosevelt
1920: Hiram Johnson
1924: Hiram Johnson
1928: Al Smith
1932: FDR
1936: Earl Warren
1940: FDR
1944: Earl Warren
1948: Truman
1952: Truman
1956: Kefauver
1960: LBJ
1964: Margaret Chase Smith
1968: LBJ
1972: Chisholm
1976: Carter
1980: Carter
1984: Jackson
1988: Jackson
1992: H.W. Bush
1996: WI: Sanders
2000: Bradley
2004: Clark
2008: Gravel
2012: Paul
2016: Sanders
2020: Sanders

[Joe Biden 2024]

1900: Bryan
1904: Roosevelt
1908: Hughes
1912: Roosevelt
1916: Hughes
1920: Wood
1924: Johnson
1928: Smith
1932: FDR
1936: FDR
1940: FDR
1944: FDR
1948: Dewey
1952: Warren
1956: Stevenson
1960: JFK
1964: Johnson
1968: RFK
1972: Muskie
1976: Church
1980: Ted Kennedy
1984: Hart
1988: Simon
1992: Harkin
1996: Clinton
2000: Gore
2004: Dean
2008: Obama
2012: Obama
2016: O'Malley
2020: Warren