Wilmington (US), Aug 12 (AP) Joe Biden is making his first appearance with newly chosen running mate Kamala Harris on Wednesday, betting that the California senator's historic profile and confrontational style against President Donald Trump will boost Democrats' efforts to oust the Republican president amid cascading national crises.

The former primary rivals will appear at a high school in Biden's Delaware hometown to discuss their shared vision for how to defeat Trump and then lead the country through a pandemic, its economic fallout and a long-simmering reckoning with systemic racism.

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Harris and Biden then will sit down together for an online fundraiser designed to let even small donors get a fresh glimpse of what the Democratic presidential ticket will look like together.

A reflection of coronavirus guidelines, there will be no adoring throngs that would greet a new running mate in a routine campaign and certainly one with Harris' historical significance. The daughter of Jamaican and Indian immigrants, she is the first Black woman and first person of Asian descent to join a major party presidential ticket.

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But the 55-year-old former prosecutor will have to put her animated public style – often a contrast to the folksier 77-year-old Biden – to use in television and online streaming formats without voter interaction or feedback.

The Biden campaign has said it plans a rollout that blends the historic nature of Harris' selection with the realities of the 2020 campaign and the gravity of the nation's circumstances. (AP)

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