Mondale, a Democrat, represented Minnesota in the Senate from 1964 until 1976, when he signed on as Carter’s running mate. He served as Carter’s No. 2 from 1977 to 1981, when he and Carter lost to Ronald Reagan and his running mate, George H.W. Bush.
Carter’s statement Monday continued, “He was an invaluable partner and an able servant of the people of Minnesota, the United States, and the world. Fritz Mondale provided us all with a model for public service and private behavior. Rosalynn and I join all Americans in giving thanks for his exemplary life, and we extend our deepest condolences to his family.”
Clinton and former President Barack Obama also weighed in Monday, commemorating Mondale for his service.
Several lawmakers on both sides of the aisle also expressed their condolences Monday.
“I loved Walter Mondale and I’m not the only one,” Democratic Sen. Tina Smith of Minnesota said in a statement. “Mondale was a giant not only because of the positions he held — Minnesota Attorney General, U.S. Senator, Vice President, Democratic Presidential candidate and Ambassador — but because of the work that he did.”
Democratic Sen. Amy Klobuchar of Minnesota said Mondale was “someone who always treated people with dignity and respect, and I was privileged to call him my friend and mentor.”
Republican Sen. Chuck Grassley of Iowa called Mondale a great senator who “spoke the values of Minnesota & loved his state like I do Iowa.”
This story has been updated with further responses.
CNN’s Aaron Pellish and Devan Cole contributed to this report.