 Since President Joe Biden's debate performance in June, some Democrats are looking to Harris to step in and succeed Biden as the party's presidential nominee. But when surveying Americans regardless of party, they're more skeptical of how Harris would perform in the Oval Office. Only 3 in 10 adults say Harris would do well as president. About half say Harris would not do a good job in the role. And 2 in 10 say they don't know enough to say.