Thirty-three years ago, he was the fast-talking junior senator from Delaware with a chip on his shoulder, desperate to prove his gravitas during a brief, ill-fated presidential run.
The next time around, in 2008, he was the seasoned foreign policy hand and veteran lawmaker who strained to capture the imagination of Democratic presidential primary voters.
As he weighed a third attempt at the presidency last year, many Democrats feared he was too late. Too old, too moderate, too meandering to excite ascendant voices in his party, too rooted in the more civil politics of the past to nimbly handle Donald Trump.
Joseph Robinette Biden Jr. ran anyway. He ran as a grieving father who connected with a country in pain. As a relative centrist who emphasized character, stability and belief in bipartisanship over the particulars of a policy agenda. As a flawed, uneven campaigner whose vulnerabilities were ultimately drowned out by his opponent's outsize weaknesses, and eclipsed by the seismic issues at stake, as the nation confronted the ravages of a deadly pandemic.
In many ways, he ran as the politician he has always been. And for one extraordinary election, that was enough.
"They're not so much saying, 'I'm investing in Joe Biden because of his philosophy,' " said former Sen. William S. Cohen, R-Maine, who served with Biden and supported him this year. "They're invested in Joe Biden because of him, of who they see as being a human being."
Biden's victory on Saturday is the culmination of a career that began in the Nixon era and spanned a half-century of political and social upheaval. But if the country, the political parties and Washington have changed since Biden, now 77, arrived in the Senate as a 30-year-old widower in 1973, some of his attitudes — about governing and about his fellow Americans — have hardly changed at all.
He still reveres institutions, defiantly champions compromise and sees politics more in terms of relationships than ideology. He has insisted that with Trump out of office, Republicans will have an "epiphany" about working with Democrats — a view that elides the fact that Republicans were rarely interested in working with the Obama administration when Biden was vice president.