In a statement, Mr Carter said he was "an invaluable partner and an able servant of the people of Minnesota, the United States and the world". "Through his work as a Senator, he showed me what was possible", Biden said in a statement. He followed the trail blazed by his political mentor, Hubert H. Humphrey, to the vice presidency, serving under Jimmy Carter from 1977 to 1981.
"When President Obama asked me to consider being his Vice President, Fritz was my first call and trusted guide". More than three decades before Harris became the country's first female vice president, Mondale, as the 1984 Democratic presidential nominee, picked Geraldine Ferraro as his running mate, making her the first woman to run on a major-party presidential ticket.
Mr Mondale was Jimmy Carter's running mate for his winning 1976 presidential bid and defeat four years later. "I'll miss him dearly, and my heart is with his family today", Harris said in a tweet. Later he served as both the USA ambassador to Japan and the envoy to Indonesia under former President Bill Clinton.
He added: "As a Senator, an Ambassador, a Vice President, and a candidate for President, he lived and spread those values".