Neither because both of those races were safe for the incumbent
I would consider Edward King's upset of Michael Dukakis in the 1978 Democratic Primary for Governor as the best example of this:
1978 Massachusetts Democratic gubernatorial primary [3]
Party Candidate Votes %
Democratic Edward J. King 442,174 51.07%
Democratic Michael S. Dukakis 365,417 42.20%
Democratic Barbara Ackermann 58,220 6.72%
Write-in All others 48 0.01%
|
King was a conservative Democrat, pro-life, and conservative on a number of issues, who was not Kennedy-friendly. He pretty much sat out the 1980 Presidential election, and switched to the GOP In 1984 and endorsed Reagan after being ousted in his 1982 rematch with Dukakis. His victory was stunning. That Dukakis came back from this to be a Presidential nominee is a forgotten comeback story. I cannot think of a single nominee of either political party who came back from losing his party's nomination as an incumbent that subsequently won a major party's nomination for President.
Poll
