Santini served in the United States Army from 1963 to 1966. Santini served consecutively as Clark County, Nevada deputy district attorney (1966–1968), Clark County public defender (1968–1970), Las Vegas justice of the peace (1970–1972) and as a district court judge of Clark County (1972–1974). He was also owner and a teacher of the Nevada Bar Review from 1969 to 1974.
Congress
Santini was elected to the U.S. House in 1974, unseating incumbent Republican David Towell. He served from 1975 to 1983 as a Democrat representing the state's at-large district. In Congress, Santini compiled a moderate-to-conservative record and won reelection by overwhelming margins. Santini ran for United States Senate in 1982, but was narrowly defeated in the Democratic primary by incumbent Howard Cannon. Cannon then lost the general election to former state Senator Chic Hecht.
Santini was the last person to represent the entire state in the U.S. House, as reapportionment gave Nevada two Congressional seats as of the 1982 Congressional election. He was succeeded by Democrat Harry Reid and RepublicanBarbara Vucanovich in the newly created 1st and 2nd Congressional Districts respectively.
In 1986, he switched to the Republican Party and ran for the Senate seat then being vacated by the retiring Paul Laxalt. Although Santini won the Republican nomination easily, he was defeated in the general election by Reid. Santini received about 44% of the vote.
Later career
After leaving public office, Santini remained in Washington, D.C., and worked as a lobbyist, representing a number of tourism-related corporations. Among his major clients were the National Tour Association, which retained him as a legislative counsel for government issues related to the national and international tourism industry. Santini had been the federal legislation and regulation Washington, D.C., representative for NTA since 1983.
Personal life
In 1990, Santini and his family appeared as contestants on the nighttime version of Family Feud. One of his aides appeared in a 1980 episode of the series and mentioned his name several times. Show host Richard Dawson made light of the Abscam sting operation during the opening segment of the episode. His aide confirmed that Santini was not involved and was a "good guy". His aide's family lost the game to the returning champions.