President Joe Biden dismissed concerns over his advanced age as he formally announced Tuesday that he is running for reelection in 2024.

He asked voters to give him more time to "finish the job" he began when he was sworn into office and to set aside their concerns about extending the run of America's oldest president for another four years.

Biden, who would be 86 at the end of a second term, is betting his first-term legislative achievements and more than 50 years of experience in Washington will count for more than concerns over his age.

He faces a smooth path to winning his party's nomination, with no serious Democratic rivals. But he's still set for a hard-fought struggle to retain the presidency in a bitterly divided nation.

The announcement, in a three-minute video, comes on the four-year anniversary of when Biden declared for the White House in 2019, promising to heal the "soul of the nation" amid the turbulent presidency of Donald Trump – a goal that has remained elusive.

"I said we are in a battle for the soul of America, and we still are," Biden said. "The question we are facing is whether in the years ahead we have more freedom or less freedom. More rights or fewer."

While the question of seeking reelection has been a given for most modern presidents, that's not always been the case for Biden, as a notable swath of Democratic voters have indicated they would prefer he not run, in part because of his age – concerns Biden has called "totally legitimate" but ones he did not address head-on in the launch video.

Yet few things have unified Democratic voters like the prospect of Trump returning to power. And Biden's political standing within his party stabilized after Democrats notched a stronger-than-expected performance in last year's midterm elections, as the president set out to run again on the same themes that buoyed his party last fall, particularly on preserving access to abortion.

"Freedom. Personal freedom is fundamental to who we are as Americans. There's nothing more important. Nothing more sacred," Biden said in the launch video, which painted the Republican Party as extremists trying to roll back access to abortion, cut Social Security, limit voting rights and ban books they disagree with. "Around the country, MAGA extremists are lining up to take those bedrock freedoms away."

"This is not a time to be complacent," Biden added. "That's why I'm running for reelection."

As the contours of the campaign begin to take shape, Biden plans to campaign on his record. He spent his first two years as president combating the coronavirus pandemic and pushing through major bills such as the bipartisan infrastructure package and legislation to promote high-tech manufacturing and climate measures.

With Republicans now in control of the House, Biden has shifted his focus to implementing those massive laws and making sure voters credit him for the improvements while sharpening the contrast with the GOP ahead of an expected showdown over raising the nation's borrowing limit that could have debilitating consequences for the country's economy.

But the president also has multiple policy goals and unmet promises from his first campaign that he's pitching voters on giving him another chance to fulfill.

"Let's finish this job. I know we can," Biden said in the video, repeating a mantra he said a dozen times during his State of the Union address in February, listing everything from passing a ban on assault-style weapons and lowering the cost of prescription drugs to codifying a national right to abortion after the Supreme Court's ruling last year overturning Roe v. Wade.

Buoyed by the midterm results, Biden plans to continue to cast all Republicans as embracing what he calls "ultra-MAGA" politics – a reference to Trump's "Make America Great Again" slogan – regardless of whether his predecessor ends up on the 2024 ballot.

He's spent the last several months road-testing campaign themes, including painting Republicans as fighting for tax cuts for businesses and the wealthy while trying to cut social safety net benefits relied on by everyday Americans and roll back access to abortion services.

Biden, speaking over brief video clips and photographs of key moments in his presidency, snapshots of diverse Americans and flashes of his outspoken Republican foes, including Trump, Florida Gov. Ron DeSantis, and Rep. Marjorie Taylor Greene of Georgia, exhorted supporters that "this is our moment" to "defend democracy. Stand up for our personal freedoms. Stand up for the right to vote and our civil rights."

Biden also plans to point to his work over the past two years shoring up American alliances, leading a global coalition to support Ukraine's defenses against Russia's invasion and returning the U.S. to the Paris climate accord. But public support in the U.S. for Ukraine has softened in recent months, and some voters question the tens of billions of dollars in military and economic assistance flowing to Kyiv.

The president faces lingering criticism over his administration's chaotic 2021 withdrawal from Afghanistan after nearly 20 years of war, which undercut the image of competence he aimed to portray to the world, and he finds himself the target of GOP attacks over his immigration and economic policies.