In fact, when asked who had the best chance of beating President Donald Trump in 2020, Biden was the clear favorite with 35 percent of Democrats and "leaners" choosing him — about twice the number who said Sanders (17 percent) and far more than Harris (9 percent).
In the Quinnipiac Poll, voters also credited Biden more than the other candidates with leadership qualities, with 31 percent saying he'd be the best leader, followed by Sanders with 18 percent and 13 percent for Harris.
Not surprisingly for a state that gave Hillary Clinton 4 million more votes than Donald Trump in 2016, the poll found 59 percent of voters would "definitely not vote" for Trump in 2020, even as 71 percent of Republicans said they "definitely would" vote to re-elect him.
For Kamala Harris, the poll has mixed news.
It indicates she has definitely surpassed other relatively high-profile candidates like Beto O'Rouke and Elizabeth Warren in California, but it shows she still has a way to go to convince voters that she has leadership qualities and can beat Trump in 2020.
Some political analysts have said that moving up California's 2020 primary to March 3 from June would boost Harris's run for the nomination. But given the proportional distribution of delegates Democrats use, there won't be any "winner take all" benefit to "favorite daughter" Harris, or anyone else.