[SmokingJoe]

Thanks.
Nixon lost to JFK in 1960 after serving 8 years as Essenhower’s VP and then won 8 years later in 1968.
Ford became president after Angew then Nixon resigned.
Gore lost to Bush and Biden didn't run in 2016.

[Verginius Rufus]

I should have specified that Ford succeeded when Nixon resigned (the only time a President has done so). Agnew resigned the Vice Presidency in 1973 so Ford had been VP for the better part of a year when Nixon resigned. Some of the Democrats in the House wanted to prevent him from being confirmed so that Carl Albert would succeed Nixon.