In 1964, when conservatives failed to fall in line and put the GOP establishment candidate on the ticket, the Rockefeller Republicans disavowed the conservative candidate (Goldwater) and worked to undermine his election.
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At the 1963 GOP convention the vote was
Goldwater 800
Romney 40
George Romney stomped out of the convention hall young Willie Mitty in tow...
George helped Johnson with funds and support to beat Goldwater..
1963=1964