How would you have voted at each Republican National Convention?

[Kaine for Senate '18]

Since 1900, using primaries since 1960.

1900-William McKinley (Ohio)
1904-Teddy Roosevelt (New York)
1908-Robert LaFollette (Wisconsin)
1912-Teddy Roosevelt (New York)
1916-Charles E. Hughes (New York)
1920-Robert LaFollette (Wisconsin)
1924-Robert LaFollette (Wisconsin)
1928-Charles Curtis (Kansas)
1932-John Blaine (Wisconsin)
1936-William Borah (Idaho)
1940-Arthur Vandenberg (Michigan)
1944-Thomas Dewey (New York)
1948-Earl Warren (California)
1952-Earl Warren (California)
1956-Dwight Eisenhower (Kansas)
1960-Nelson Rockefeller (New York)
1964-Nelson Rockefeller (New York)
1968-Nelson Rockefeller (New York)
1972-Richard Nixon (California)
1976-Gerald Ford (Michigan)
1980-Howard Baker (Tennessee)
1984-Harold Stassen (Minnesota)
1988-George HW Bush (Texas)
1992-George HW Bush (Texas)
1996-Lamar Alexander (Tennessee)
2000-John McCain (Arizona)
2004-NOTA
2008-John McCain (Arizona)

[jokerman]

Howard Stassen

[Robespierre's Jaw]

1900: William McKinley
1904: Theodore Roosevelt
1908: Robert La Follette
1912: Theodore Roosevelt
1916: Theodore Roosevelt
1920: Hiram Johnson
1924: Hiram Johnson
1928: Herbert Hoover
1932: John Blaine
1936: William Borah
1940: Wendell Willkie
1944: Thomas Dewey
1948: Thomas Dewey
1952: Dwight Eisenhower
1956: Dwight Eisenhower
1960: Nelson Rockefeller
1964: Nelson Rockefeller
1968: Nelson Rockefeller
1972: Pete McCloskey
1976: Gerald Ford
1980: John Anderson
1984: WI: William Cohen
1988: George H.W. Bush
1992: George H.W. Bush
1996: WI: Pete Wilson
2000: John McCain
2004: WI: Lincoln Chafee
2008: WI: Lincoln Chafee

[Daniel Adams]

1900: William McKinley (Ohio)
1904: Theodore Roosevelt (New York)
1908: William Howard Taft (Ohio)
1912: Theodore Roosevelt (New York)
1916: Theodore Roosevelt (New York)
1920: Calvin Coolidge (Massachusetts)
1924: Calvin Coolidge (Massachusetts)
1928: Charles Curtis (Kansas)
1932: Joseph France (Maryland)
1936: Alf Landon (Kansas)
1940: Wendell Willkie (New York)
1944: Thomas Dewey (New York)
1948: Thomas Dewey (New York)
1952: Dwight Eisenhower (Kansas)
1956: Dwight Eisenhower (Kansas)
1960: Richard Nixon (California)
1964: William Scranton (Pennsylvania)
1968: Ronald Reagan (California)
1972: Richard Nixon (California)
1976: Gerald Ford (Michigan)
1980: Ronald Reagan (California)
1984: Ronald Reagan (California)
1988: George Bush (Texas)
1992: George Bush (Texas)
1996: Phil Gramm (Texas) (after he dropped out, Bob Dole of Kansas)
2000: John McCain (Arizona)
2004: George Walker Bush (Texas)
2008: John McCain (Arizona)

[PBrunsel]

I'll try my luck at this one. I am guessing I can vote for anyone who ran or didn't run since I am a delegate.

1900: William McKinley
1904: Theodore Roosevelt
1908: Joe Cannon
1912: William Taft
1916: Charles Fairbanks
1920: Herbert Hoover
1924: Calvin Coolidge
1928: Herbert Hoover
1932: Herbert Hoover
1936: Herbert Hoover
1940: Robert Taft
1944: Robert Taft
1948: Robert Taft
1952: Robert Taft
1956: Dwight Eisenhower
1960: Barry Goldwater
1964: George Romney
1968: Richard Roudebush
1972: John Ashbrook
1976: Ronald Reagan
1980: Phillip Crane
1984: Ronald Reagan
1988: Pat Robertson
1992: Patrick Buchanan
1996: Richard Lugar
2000: Alan Keyes
2004: George W. Bush
2008: Abstain

[Frodo]

1900: William McKinley
1904: Theodore Roosevelt
1908: Theodore Roosevelt (write-in)
1912: Theodore Roosevelt
1916: Charles Evan Hughes
1920: Leonard Wood
1924: Robert LaFollete
1928: Herbert Hoover
1932: abstained
1936: Alfred Landon
1940: Charles McNary
1944: Thomas Dewey
1948: Thomas Dewey
1952: Dwight D. Eisenhower
1956: Dwight D. Eisenhower
1960: Richard M. Nixon
1964: Nelson Rockefeller
1968: Richard Nixon
1972: Richard Nixon
1976: Gerald Ford
1980: George H. W. Bush
1984: Ronald Reagan
1988: George H. W. Bush
1992: George H. W. Bush
1996: Bob Dole
2000: John McCain
2004: George W. Bush
2008: John McCain

[jeron]

1900-William McKinley (Ohio)
1904-Teddy Roosevelt (New York)
1908-Robert LaFollette (Wisconsin)
1912-Teddy Roosevelt (New York)
1916-Teddy Roosevelt (New York)
1920-Hiram Johnson (California)
1924-Hiram Johnson (California)
1928-Herbert Hoover (California)
1932-Abstained
1936-Alf Landon (Kansas)
1940-Thomas Dewey (New York)
1944-Thomas Dewey (New York)
1948-Thomas Dewey (New York)
1952-Wayne Morse (Oregon)
1956-Dwight Eisenhower (Kansas)
1960-Nelson Rockefeller (New York)
1964-Nelson Rockefeller (New York)
1968-Nelson Rockefeller (New York)
1972-Pete McCloskey (California)
1976-Gerald Ford (Michigan)
1980-John Anderson (Illinois)
1984-Abstained
1988-George HW Bush (Texas)
1992-Abstained
1996-Abstained
2000-Abstained
2004-Abstained
2008-Abstained

[SPC]

08-Paul
04-NOTA
00-Forbes
96-Forbes
92-Buchanan
88-DuPont
84-Flynt
80-Crane
76-Reagan
72-Ashbrook
68-Reagan
64-Goldwater
60-Goldwater
56-NOTA
52-Taft
48-Taft
44-Taft
40-Taft
36-Hoover
32-Coolidge
28-Coolidge
24-Coolidge
20-Harding
16-LaFollete
12-LaFollete
08-NOTA
04-NOTA
00-NOTA

[they don't love you like i love you]

SPC likes LaFollette?

[YRABNNRM]

I'm just gonna take it from 1960, attempting to do this without hindsight (otherwise I wouldn't be voting for Nixon or GWB)...

1960 - Nelson Rockefeller
1964 - Nelson Rockefeller
1968 - Nelson Rockefeller
1972 - Richard Nixon
1976 - Ronald Reagan
1980 - Howard Baker
1984 - Ronald Reagan
1988 - Jack Kemp
1992 - George H.W. Bush
1996 - Richard Lugar
2000 - John McCain
2004 - George W. Bush
2008 - John McCain

[JSojourner]

Let me just stick with my lifetime --  1965 onward.  And I was a Republican until 1989 so I actually did vote for a couple of these guys.

1968: Richard Nixon then; Nelson Rockefeller if I were then, the man I am now.
1972: Nixon then; Pete McCloskey if...
1976: Gerald Ford
1980: Reagan then; a moderate or liberal R if...
1984: same as 1980
1988: Bob Dole
1992: George H.W. Bush
1996: Write in for Mark Hatfield
2000: John McCain
2004: Write in for Mark Hatfield as a war protest
2008:  Write-in for Chuck Hagel as a war protest

[Bleeding heart conservative, HTMLdon]

Given that most of these contests ended up being decided in the primary, I'll take some liberties...

1900: McKinley
1904: Roosevelt
1908: Taft
1912: Roosevelt
1916: Hughes
1920: Lowden
1924: Coolidge
1928: Hoover
1932: Hoover
1936: Landon
1940: Dewey
1944: Dewey
1948: Dewey
1952: Eisenhower
1956: Eisenhower
1960: Nixon
1964: Romney, Scranton, then Rockefeller
1968: Fong, Rockefeller on 2nd ballot
1972: Nixon
1976: Ford
1980: Baker, Bush on 2nd ballot
1984: Reagan
1988: Bush
1992: Bush
1996: Alexander, Dole on 2nd ballot
2000: McCain
2004: Bush
2008: Thompson, McCain on 2nd ballot

[DownWithTheLeft]

I'll start with the 1960s:

1960: Barry Goldwater
1964: Barry Goldwater
1968: Clifford Case
1972: Ronald Reagan
1976: Ronald Reagan
1980: Ronald Reagan
1984: Ronald Reagan
1988: Ron Paul
1992: Patrick Buchanan
1996: Steve Forbes
2000: Orrin Hatch
2004: George W. Bush
2008: Ron Paul

[SPC]

SPC likes LaFollette?

The lesser of three evils compared to Taft and Roosevelt.

[Continential]

1856: John C. Frémont and Abraham Lincoln
1860: Abraham Lincoln and Cassius Clay
1864: Abraham Lincoln and Hannibal Hamlin
1868: Ulysses S. Grant and Benjamin Wade
1872: Ulysses S. Grant and Henry Wilson
1876: Benjamin Bristow and Joseph Hawley
1880: Ulysses S. Grant and Blanche Bruce
1884: Chester A. Arthur and Walter Q. Gresham
1888: John Sherman and William Walter Phelps
1892: Benjamin Harrison and Whitelaw Reid
1896: William McKinley and Garret A. Hobart
1900: William McKinley and Theodore Roosevelt
1904: Theodore Roosevelt and William Howard Taft
1908: William Howard Taft and George L. Sheldon
1912: Theodore Roosevelt and William Borah
1916: Charles Evans Hughes and Elmer J. Burkett
1920: Leonard Wood and Calvin Coolidge
1924: Calvin Coolidge and Herbert Hoover
1928: Herbert Hoover and Charles Curtis
1932: William Borah and William Borah
1936: William Borah and Frank Knox
1940: Wendell Willkie and Charles L. McNary
1944: Thomas E. Dewey and John W. Bricker
1948: Harold Stassen
1952: Dwight D. Eisenhower
1956: Dwight D. Eisenhower
1960: Richard M. Nixon
1964: William Scranton
1968: George W. Romney

[Blow by blow, the passion dies]

1856: John Fremont
1860: William Seward
1864: John Fremont
1868: Ulysses Grant
1872: Horace Greeley
1876: Rutherford Hayes
1880: James Garfield
1884: That guy from Vermont
1888: Benjamin Harrison
1892: Benjamin Harrison
1896: William McKinley
1900: Theodore Roosevelt
1904: Theodore Roosevelt
1908: William Howard Taft
1912: Albert Cummins
1916: Charles Hughes
1920: Leonard Wood
1924: Calvin Coolidge
1928: Charles Curtis
1932: Abstain
1936: Alf Landon
1940: Thomas Dewey
1944: Thomas Dewey
1948: Harold Stassen
1952: Dwight Eisenhower
1956: Dwight Eisenhower
1960: Nelson Rockefeller
1964: Nelson Rockefeller
1968: Nelson Rockefeller

[West_Midlander]

1st Round only (w/o hindsight)

2020: Trump
2016: Rubio
2012: Paul
2008: McCain
2004: Bush
2000: McCain
1996: WI: Perot
1992: Bush
1988: Bush
1984: Reagan
1980: Anderson
1976: Ford
1972: Nixon
1968: Fong
1964: Fong
1960: Ford
1956: Eisenhower
1952: Warren
1948: Warren
1944: DK
1940: DK
1936: DK
1932: DK
1928: Curtis
1924: La Follette
1920: Johnson
1916: Roosevelt
1912: Roosevelt
1908: Roosevelt
1904: Roosevelt
1900: DK
1896: DK
1892: Lincoln
1888: Douglass
1884: Lincoln
1880: Grant
1876: Washburne
1872: Grant
1868: Grant
1864: Lincoln
1860: DK
1856: Fremont

[Asenath Waite]

Write in vote for Thaddeus Stevens, Fiorello LaGuardia and John Lindsay at all.