None of the Republicans in '96 were going to defeat Clinton (not Lamar Alexander, not Steve Forbes, not Dan Quayle if he had won the Powerball) so Dole getting to ride off into the political sunset at the Presidential stage was about the best they could hope to accomplish that year.
1968 (Like 2004, 1988, 1948, etc) were years that both parties actually stood a good chance of victory. In '68 it was not only a hugely important election, but it also featured Nixon as the GOP nominee and someone the Dems knew they could beat. Instead, they chose the man who didnt have the peoples' passion like McCarthy did but did give Nixon plenty of confidence. HHH than ran a perfect campaign for Nixon until he started speaking againgst the War in the final days, bridged the gap several percentage points, and just barely lost. He lost one of the biggest elections ever which he could have handily won. That is why I say he was the worst candidate of the last 100 years.