Joe Biden has won his face-off against incumbent Republican President Donald Trump in the 2020 US Election.
The career politician, who served as the US Vice President to Barack Obama, again found himself back on the national stage after winning the Democratic nomination in June.
Polls put him streets ahead - but much like the 2016 US Election, Trump did better than pundits expected and surged back to make it a very competitive contest.
However, after a protracted wait brought on by tight battles in swing states and Trump's threats of litigation, Biden has now been confirmed as the 46th President of the United States.
So who is Joe Biden? Here's what you need to know.
Growing up
Joseph Robinette Biden Jr was born in Scranton, Pennsylvania in 1942 to deeply Catholic, middle-class parents, Catherine and Joseph Sr.
He has three younger siblings; a sister, Valerie, and two brothers, Francis and James.
After a recession in Scranton when Biden was 10-years-old, the Bidens moved to Delaware, where his father became a used car salesman.
From an early age, Biden's natural leadership abilities shone through, despite his lack of academic proficiency. He was class president throughout his school life, despite struggling with a stutter until his early 20s.
Aged 22, Biden earned a Bachelor of Arts degree from Delaware University, double-majoring in history and political science, before meeting Neilia Hunter during a spring break trip to the Bahamas.
"I fell ass over tin cup in love - at first sight," he wrote in his memoir.
They ended up marrying a year later and had three children together.
He went on to earn a law degree from Syracuse University and later worked at firms headed by both Republicans and Democrats and part-time as a public defender.
After initially registering as an independent candidate, he was convinced to register as a Democrat by his boss at the time.
Early political career
While still working in law, Biden was elected to a seat on the county council in the heavily Republican district of New Castle County, Delaware in 1969. His campaign centred on public housing and opposing the construction of highways that may disturb quiet neighbourhoods in the area.
Three years later, Democrats asked him to run for Delaware Senator - a race he was given virtually no chance of winning.
At this time Biden was just 29, he was running against a strong two-term incumbent in Republican J Caleb Boggs, was the only Democrat candidate, and had almost no funding behind his campaign.
However, after a grassroots campaign managed by his family that emphasised meeting voters face-to-face and handing out promotional material in person, he pulled back from 30 percentage points behind to claim a stunning upset victory.
But what had been a momentous year in his political career was sadly marred by personal tragedy. His wife Neilia and one-year-old daughter Amy were killed in a car crash on December 18, 1972, with his sons suffering serious injuries but surviving.
He considered quitting politics at this time but was convinced to stay on. Less than a month after the crash, he was sworn in as the sixth-youngest Senator in US history.
The six-term senator and a new marriage
Understandably, the death of Biden's wife and daughter had a huge impact on him. He commuted an hour and a half twice a day from Washington, DC to see his grieving, injured sons in Delaware - a routine he would keep up for 36 years as he worked in the Senate.
Struggling to concentrate on his work in his first few years as Delaware Senator, Biden was convinced to go on a blind date organised by his brother with teacher Jill Jacobs, three years on from Neilia's death.
It was a huge success, with Biden entering a relationship with Jill and later marrying her. He says she is the person who ultimately revitalised his life and interest in politics.
They remain married 43 years on and have one child together, Ashley Blazer.
His first run at the US Presidency and brain surgery
On June 9, 1987 - during his fourth term as Delaware Senator - Biden declared his candidacy for the Democratic presidential nomination.
However, it was a short-lived campaign, blighted by mixed messaging, rivalries amongst his staff, and accusations he had plagiarised a speech by a UK politician and a paper he'd written at law school.
He pulled out of the race officially on September 23, 1987, claiming his candidacy had been obscured by "the exaggerated shadow" of past mistakes.
A year later, after bouts of intense neck pain, Biden got surgery to correct an aneurysm, but suffered serious complications and was kept out of work for seven months as he recovered.
2008 presidential campaign
After a lengthy career in the Senate, Biden threw his hat back in the ring to become the Democratic presidential nominee in 2008, sensing an opportunity with Republican President George W Bush stepping down after two terms.
However his campaign never really got going against the high-profile candidates Barack Obama and Hillary Clinton and withdrew from the race after placing fifth overall in the Iowa caucuses.
But it was during this time that his relationship with Obama - which had begun with rivalry and resentment - began to blossom.
After Obama was confirmed as the Democratic nominee, he invited Biden to be his Vice President should he get into the White House - an offer he initially rejected before softening his stance.
Biden was vetted for the role and announced as Obama's running mate on August 22, 2007, and became Vice President in January the following year.
During his two terms as Obama's deputy in the Oval Office, Biden oversaw policy on Iraq, headed up the Gun Violence Task Force, and was heavily involved in campaigning for the midterms.
Tragically, his eldest son Beau Biden died in May 2015 of brain cancer.
This year's presidential campaign
The death of Beau was a drain on Biden's energy that ultimately prevented him from running as the Democratic presidential nominee in 2016.
He became the Benjamin Franklin Presidential Practice professor at the University of Pennsylvania in 2017 and was surprised by Obama with a Presidential Medal of Freedom that year.
After months of speculation he'd gun for the Democratic presidential nomination in 2020, he finally announced it officially on April 25, 2019.
Amid strong showings from Kamala Harris, Elizabeth Warren, and Bernie Sanders, Biden struggled early on, finishing fourth in the Iowa caucus and fifth in the New Hampshire primary.
His campaign was also embattled by claims of shady dealings by his son Hunter in Ukraine, and by allegations that he made inappropriate contact with women at public events.
But he built support after the withdrawals and endorsements of Pete Buttigieg and Amy Klobuchar, earning huge support in the Super Tuesday primaries and building a lead over Sanders, the last Democrat left in the race.
When Sanders pulled out officially on April 8, Biden became the presumptive nominee - and soon after, on August 11, announced former rival, Kamala Harris, as his running mate.
The pair took on President Trump and Vice President Mike Pence in the election on November 3. After several days of vote-counting, tight battles in swing states, and Trump's threats of litigation, they were announced as winners.
