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for a second term but advisers say he has felt little need to jump into campaigning because he faces no significant opposition to his party's nomination.

It'll be a markedly different experience from four years ago, as when Biden was written off by much of the political establishment until he consolidated support as the candidate Democrats believed was best positioned to defeat then-President Donald Trump while the coronavirus pandemic raged. This time around, he will have to juggle the challenge of running for reelection while also running the country.

Biden in recent months has been focused on implementing the massive infrastructure, technology investment and climate laws passed during his first two years in office and drawing a sharp contrast with Republicans as Washington gears up for a fight over raising the nation’s borrowing limit. Aides believe those priorities will burnish his image ahead of his reelection campaign.

The president, already the oldest person ever elected the job, will also need to contend with voter concerns about his fitness for the job. He has brushed aside those concerns, telling voters to “watch me,� and aides say he plans to mount a robust campaign ahead of what they expect to be a close general election owing to the country's polarization, no matter who emerges as the GOP standard-bearer.

Biden has to Washington next week for what was expected to be a dinner with him and a strategy session with his chief political advisers.

The Washington Post first reported on the expected timing of the announcement.