His death ended a remarkable run for a man who first went on the air with "The McLaughlin Group" in 1982.
Born in 1927 in Providence, Rhode Island, McLaughlin became a Jesuit priest but stepped down in 1975, after getting increasingly involved in politics and punditry.
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He switched from Democrat to Republican during the Vietnam War, which he came to support, and ran for U.S. Senate in his home state. He lost, but became a speechwriter for Nixon. After Nixon's resignation. McLaughlin turned to political consulting, then journalism.
McLaughlin wrote for National Review magazine and hosted various programs on radio and television. His career took off with "The McLaughlin Group," which aired mainly on PBS, and his interview show, "One on One."
The shows familiarized millions of Americans with his forceful speaking style, and spawned imitators and parodies, including sketches on "Saturday Night Live."
McLaughlin made cameo appearances on the sitcoms "Cheers" and "Murphy Brown" and in several politics-related movies, including 1993's "Dave" and 1998's "Bulworth."
He also hosted a show on CNBC in the early 1990s.
In an announcement posted on Facebook, staff from "The McLaughlin Group" said McLaughlin died peacefully Tuesday morning.
"For 34 years, The McLaughlin Group informed millions of Americans. Now he has said bye bye for the last time, to rejoin his beloved dog, Oliver, in heaven," the post said. "He will always be remembered."