He modifies a famous Barry Goldwater quote to apply it to his party’s far left wing: “Extremism in the defense of progressivism is no vice; moderation in the pursuit of votes is no virtue.”

Source: https://suindependent.com/good-advice-for-the-democratic-and-republican-party/

In August 1974, Arizona’s conservative icon U.S. Sen. Barry Goldwater led fellow Republicans to the White House to affirm their law-and-order beliefs by telling President Richard Nixon he faced certain impeachment and conviction.

Source: https://www.bangordailynews.com/2023/08/29/opinion/opinion-contributor/trump-mugshot-republican-primary-debate-america-decline/

One year, O’Shea went on, New College had supplied four of the state university system’s six Fulbright scholars; another year, the school’s student scientists had won forty per cent of the Goldwater scholarships awarded in Florida.

Source: https://www.newyorker.com/news/the-political-scene/what-is-ron-desantis-doing-to-floridas-public-liberal-arts-college

Until politicians needed to derail presidential candidate Barry Goldwater with their concern that his election would result in (as shown on TV) nuclear war — playing the ‘existential threat’ card was, for both sides, a bridge too far.

Source: https://hudsonvalleyone.com/2023/06/07/local-elections-springtown-road-water-rates-and-more-letters-from-our-readers/