He just needs to make it to August 9, 2026.
This.
It's also interesting that Nixon and Biden are the only former vice presidents to win the presidency. Though Nixon was out for eight years, Biden just four.
Bush senior?
Bush Sr won as an incumbent VP, not former
Yeah, that's why I wrote former vice president, meaning at the time of the election. Poppy Bush was the incumbent vice president in November 1988. Interestingly, the prior vice president to be successful in a White House bid was Martin Van Buren all the way back to 1836 (excluding vice presidents that ascended to office via succession and were later elected to a full term).
That is the roughly 100 years between Andrew Jackson and WW2, the Vice Presidency wasn't worth a bucket of warm piss (to quote a VP)
While there were VPs who tried to become president, it took Truman coming into office and learning about the Atomic Bomb for the vice presidency to finally be taken seriously. Thus presidential material.