After almost ten years without going to a political event, Kennedy Onassis went to the 1976 Democratic National Convention. She resigned from Viking Press in 1977 after John Leonard of "The New York Times" said that she had some responsibility for Viking's publication of the Jeffrey Archer novel "Shall We Tell the President?". The novel is set in a fictional future presidency of Ted Kennedy and talked about an assassination plot against him. Two years later, she appeared alongside her mother-in-law Rose Kennedy in Boston when Ted Kennedy announced that he was going to run against President Jimmy Carter for the Democratic nomination for president.