Robinson was active in politics throughout his post-baseball life. He identified himself as a political independent, although he held conservative opinions on several issues, including the Vietnam War (he once wrote to Martin Luther King Jr. to defend the Johnson Administration's military policy). After supporting Richard Nixon in his 1960 presidential race against John F. Kennedy, Robinson later praised Kennedy effusively for his stance on civil rights. Robinson was angered by conservative Republican opposition to the Civil Rights Act of 1964. He became one of six national directors for Nelson Rockefeller's unsuccessful campaign to be nominated as the Republican candidate for the 1964 presidential election. After the party nominated Senator Barry Goldwater of Arizona instead, Robinson left the party's convention commenting that he now had "a better understanding of how it must have felt to be a Jew in Hitler's Germany". He later became special assistant for community affairs when Rockefeller was re-elected governor of New York in 1966. Switching his allegiance to the Democrats, he subsequently supported Hubert Humphrey against Nixon in 1968.