per Bradbury’s Wikipedia Article

"Bradbury considered himself a political independent.[83] Raised a Democrat, he voted for the Democratic Party until 1968. In 1952, he took out an advertisement in Variety as an open letter to Republicans, stating: “Every attempt that you make to identify the Democratic Party as the party of Communism, as the ‘left-wing’ or ‘subversive’ party, I will attack with all my heart and soul.”[84] However, Lyndon B. Johnson’s handling of the Vietnam War left Bradbury disenchanted, and from 1968 on he voted for the Republican Party in every presidential election with the exception of 1976, when he voted for Jimmy Carter. According to Bradbury’s biographer Sam Weller, Carter’s inept handling of the economy “pushed [Bradbury] permanently away from the Democrats”.[83]

Bradbury called Ronald Reagan “the greatest president” whereas he dismissed Bill Clinton, calling him a “shithead”.[85] In August 2001, shortly before the September 11 attacks, he described George W. Bush as “wonderful” and stated that the American education system was a “monstrosity”.[86] He later criticized Barack Obama for ending NASA’s crewed space flight program.[85]

In 2010, he criticized big government, saying that there was “too much government” in America, and “I don’t believe in government. I hate politics. I’m against it. And I hope that sometimes this fall, we can destroy part of our government, and next year destroy even more of it. The less government, the happier I will be".[85] Bradbury was against affirmative action, condemned what he called “all this political correctness that’s rampant on campuses”, and called for a ban of quotas in higher education.[21][85] He asserted that “[e]ducation is purely an issue of learning—we can no longer afford to have it polluted by damn politics”.[21]”