Comic David Frye, whose impressions of Presidents Richard Nixon and Lyndon Johnson and other prominent political figures vaulted him to popularity in the 1960s and 1970s, has died in Las Vegas at the age of 77. Clark County Coroner Mike Murphy said Saturday that Frye died of cardiopulmonary arrest at his home on Monday. Frye’s sister, Ruth Welch of Boynton Beach, Fla., says he was a born genius who began by imitating neighbors in Brooklyn, N.Y., where they grew up. She says her brother had an “ear for people’s voices” and an “eye for their movements” that made his impressions very accurate. She says he was a “wonderful” brother and will be missed “terribly” by his family. Among others, Frye appeared on the Ed Sullivan Show and the Tonight Show Starring Johnny Carson.