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[PHILADELPHIA] Hillary Clinton became the first woman in history to win the White House nomination of a major US political party on Tuesday, securing the backing of Democrats at a convention in Philadelphia.
The former first lady, senator and secretary of state took a monumental step on her quest to become American's first female president, by besting party challenger Bernie Sanders.
After a tumultuous convention opening which saw Mr Sanders and Mrs Clinton supporters trade jeers and chants, Mrs Clinton passed the 2,382-delegate threshold needed for the nomination, setting up a showdown with Republican Donald Trump in November.
"History," said a post on her Twitter account.
Although the outcome was a foregone conclusion, the state-by-state vote saw rowdy displays on the convention floor.
Some diehard Sanders delegates expressed frustration with their candidate's defeat, but the divisions seen were much less pronounced than on Monday.
Mrs Clinton's nomination was formally put forward by Senator Barbara Mikulski of Maryland, the longest serving woman in the history of the US Congress.
Civil rights icon John Lewis, a congressman from Georgia, seconded the nomination.
The Clinton camp is looking to unite the party's factions.
Monday saw disruptive protests and a rancorous fight over leaked emails that showed party bias against Mr Sanders. Frustration boiled over as his delegates jeered speakers who mentioned Mrs Clinton.
Vice-President Joe Biden, who will address the convention Wednesday along with President Barack Obama, dismissed concerns the party was not uniting behind Mrs Clinton.
"We've got to show a little class and let them be frustrated for a while. It's OK," he said of Sanders supporters as he toured the convention arena Tuesday.
Mr Sanders meanwhile called on his supporters to get behind Mrs Clinton.
"What we must do, or forever look back in regret, is defeat Donald Trump and elect Hillary Clinton," he said Tuesday while addressing the California delegation.
"In my view, it's easy - it's easy to boo, but it is harder to look your kids in the face who would be living under a Donald Trump presidency," he said.
Mr Trump took the usual shots at Mrs Clinton during a speech to the Veterans of Foreign Wars in Charlotte, North Carolina, calling her "Crooked Hillary" and charging that her use of a private email account as secretary of state "put America's entire national security at risk."
A Clinton campaign official said Tuesday's convention events aim to draw a sharp contrast with Mr Trump. The line-up of speakers will talk about her life-long fights to make a difference.
Chief among them will be former president Bill Clinton, who will take the stage during primetime to hail his wife as a "change-maker," the official said.
But Mrs Clinton and the others - including mothers who have lost children to gun violence or in clashes with police - will also have the unstated mission of mending fences with Sanders' army of vocal young activists.
Michelle Obama appeared to soothe some of the Sanders zealots Monday night, as she delivered a heartfelt endorsement from one first lady to another and hailed the inspirational prospect of a first female US president.
"In this election, I'm with her," Mrs Obama said.
She also praised how Clinton handled her defeat to Barack Obama eight years ago.
"She didn't get angry or disillusioned. Hillary did not pack up and go home," she said. "As a true public servant Hillary knows that this is so much bigger than her own desires and disappointments."
Despite Mr Sanders calling on his flock to get behind Clinton, his self-styled "political revolution" appears to have transformed into a revolt.
Mr Sanders himself was booed by some sections of the audience when he told the crowd Monday: "Hillary Clinton will make an outstanding president and I am proud to stand with her tonight." Michigan delegate Charles Niswander, 28, said he and other Sanders delegates would never line up behind Mrs Clinton.
"None of them want her, the people who voted for Bernie," Mr Niswander said.
The party is still reeling from leaked Democratic National Committee emails which show nominally neutral party staff trying to undermine Mr Sanders' campaign and questioning his Jewish faith.
The Federal Bureau of Investigation said it was investigating the "cyber intrusion," which the Clinton campaign blamed on Russian hackers it said are bent on helping Mr Trump.
Bill Clinton's highly anticipated address could jump-start the party healing process.
The 69-year-old Democratic icon and two-term president remains a powerful force on the national stage, although he is more gaunt and his energy is no longer boundless as it appeared four years ago.
At the 2012 Democratic convention, he delivered closing arguments for why Barack Obama should be re-elected, a voice of experience explaining Obama's policies in clear, cogent detail and why he felt Republican policies were failing.