[softwarecreator]

Didn’t Bush Sr. also lose re-election?

[Perdogg]

Yes, the last three incumbrnts who lost, Ford, Carter, and Bush, had serious challengers in the primaries and two of them Carter and Bush, had a serious third party candidate.

[x]

Didn’t Bush Sr. also lose re-election?

True. Democrats were able to unseat GHWB, Gerald Ford, Hoover, Taft.

But Republicans were only able to take out Carter (You can go back further and talk about Harrison and Cleveland and Martin Van Buren, if you want, as well as Presidents who failed to win their party's nomination for a second term).

Ross Perot's independent campaign had a lot to do with GHWB's defeat. There's a lot of debate about whether Bush Sr. would or wouldn't have lost in a 2-candidate race.