Bob Dole takes exception to anyone but Bob Dole keeping that honor.
In terms of utter rejection by voters Goldwater will retain that honor for decades after we are all dead. He ushered in the Great Society with an epic defeat that only a few rats could match in modern times.
Dole got 40.7% of the vote against Clinton's 49.2%. Goldwater got 38.5% but also managed to scare 61.1% of voters to vote against him, and elect Johnson