Throughout his career, Koch signed many bills including one that allowed gays and lesbians to marry in New York City. Another well-known act he did in New York was that he helped try to find a cure for AIDS. He had many preventions and awareness programs. He was a Democrat. He ran for Governor of New York, but lost the election. His career began to slowly come to an end after Koch suffered a stroke in 1987. When he was a representative, he supported the Civil Right Act during the 1960s.