A Trump hating poll. Remember the pollsters that suggested Hillary would win in 2016 or the 2024 poll indicating that Trump was down double digits in Iowa? Who cares? If his approval rating drops to zero, he is still the president and Kamala is not - and never will be. That's what matters. Cite all the polls that you want. Trump will go down in history as a two-term president. A transformational figure.
I think Kamala should have run for governor of California. That way she could have followed Richard Nixon's path to the White House.
Sitting Vice-President
Lose the presidential election
Two years later lose the governor's race in California ("You won't have Kamala to kick around anymore" speech would be optional)
Go into private practice (OK that's a tough one. What prestigious law firm would hire her?}
In 2030 midterms campaign for congressional candidates around the country, earning favors in return
In 2032 call in those favors and cruise to the nomination.
Win the 2032 general election.
There's one big problem with that scenario. In 1968, the majority of convention delegates were still chosen at state party conventions where Nixon used the creds he banked in 1966. He did well in the primaries but it was the unelected delegates that put him over the top. The decisive move was offering Spiro Agnew the Veep spot in exchange for Agnew delivering the Maryland delegation.
Now, most of the delegates are selected in primaries and caucuses. Kamala is such a bad candidate, there's almost no way she could win a majority through the primaries. I doubt she would still be viable after losing big in Iowa and New Hampshire.