Frank Moore, a Top Aide to Jimmy Carter, Is Dead at 89

Frank Moore, who as President Jimmy Carter’s congressional liaison toiled with mixed results to sell the agenda of a self-professed outsider to veterans of Washington, died on Thursday at his home in St. Simons Island, Ga. He was 89.

His son Brian confirmed the death.

Mr. Carter was known for having a “Georgia Mafia” around him during his presidency. Mr. Moore was a leading member of that group, and the two men remained close until Mr. Carter’s death. According to the Georgia newspaper The Gainesville Times, Mr. Moore was the last living person to have worked for Mr. Carter for the entirety of his political career: as an aide from his days as a Georgia state senator all the way through his presidency.

In Washington, the two men had what might have seemed like an ideal chance for legislative achievements. For all four years of the Carter administration, the Democrats controlled every branch of government, and from January 1977 to January 1979 they had supermajorities in the House and the Senate.

Yet it was a less ideologically homogenous era for the party. The Democratic caucus in the Senate, for example, encompassed liberals like Edward M. Kennedy of Massachusetts, staunch anti-Communists like Henry Jackson of Washington and conservative segregationists like John C. Stennis of Mississippi.

These separate factions and their wily tacticians were relatively unfamiliar to Mr. Carter and Mr. Moore, who had first met far away from the nation’s capital — on a local planning panel in Georgia in the mid-1960s.

In the 1970s, after Mr. Carter had been elected governor, he made Mr. Moore his chief of staff. During Mr. Carter’s presidential run, Mr. Moore, a soft-voiced 40-year-old who held the title of national finance chairman, was one of a few of Mr. Carter’s Georgia allies to set up his campaign office in Washington.