1968-2020: How I wish they went

[darklordoftech]

1968: George Romney vs. Hubert Humphrey
1972: Richard Nixon vs. George McGovern
1976: Gerald Ford vs. Scoop Jackson
1980: John Anderson vs. Jimmy Carter
1984: Ronald Reagan vs. Walter Mondale
1988: Pat Robertson vs. Paul Simon
1992: George HW. Bush vs. Tom Harkin
1996: Pat Buchanan vs. Bill Clinton
2000: Gary Bauer vs. Al Gore
2004: George W. Bush vs. Howard Dean
2008: Mike Huckabee vs. Hillary Clinton
2012: Donald Trump vs. Barack Obama
2016: Donald Trump vs. Bernie Sanders
2020: Donald Trump vs. Bernie Sanders

For my list, I'm using declared candidates that were either nominated or had a realistic shot at being the nominee. Bolded candidate is the candidate that I would want to win in said match up and I have maps as I don't have the time. Will provide further elaboration for some elections:

1968: George Romney vs. Hubert Humphrey
1972: Richard Nixon vs. Edmund Muskie
1976: Ronald Reagan vs. Scoop Jackson
1980: George HW Bush vs. Jimmy Carter
1984: Ronald Reagan vs. Gary Hart
1988: George HW. Bush vs. Dick Gephardt
1992: George HW. Bush vs. Tom Harkin
1996: Pat Buchanan vs. Bill Clinton
2000: George W. Bush vs. Al Gore
2004: George W. Bush vs. John Kerry
2008: Mitt Romney vs. Hillary Clinton
2012: Rick Santorum vs. Barack Obama
2016: Ted Cruz vs. Hillary Clinton
2020: Donald Trump vs. Joe Biden (though by a much larger margin that in Real life)

Why Scoop Jackson for 1976 and why Dick Gephardt for 1988?