PHILADELPHIA (AP) — The Latest on the Democratic National Convention in Philadelphia (all times EDT):

8:25 p.m.

Hillary Clinton was campaigning in Las Vegas earlier this year when she heard directly from a young girl who was worried because her parents are living in the United States illegally.

Now 11-year-old Karla Oritz has told her story to a national audience — from the stage at the Democratic National Convention.

Karla's an American citizen who appeared with her mother at the Philadelphia gathering. Karla says she worries about what might happen if she comes home and finds her house empty.

That conversation she had with Clinton in Las Vegas ended up as part of a television ad for the Clinton campaign.

Karla says she remember how Clinton called her brave. The youngster says she wants to grow up to be a lawyer, so that "I can help other families like us."

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8:15 p.m.

Liberal stalwart Elizabeth Warren is using her Democratic convention speech to make clear her view that Americans won't fall for Donald Trump's plan to fan what she calls "the flames of fear and hatred."

The Massachusetts Democrat says in excerpts of a speech she plans to deliver later Monday that the Republican presidential nominee is peddling an old story of "divide and conquer."

Warren says Trump thinks he can win votes "by turning neighbor against neighbor" and by persuading voters that the source of their problems is "people who don't look like you, or don't talk like or don't worship like you."

She says bankers, oil companies and giant corporations benefit "when we turn on each other."

Warren says a divided America can't "fight back against a rigged system." She says "the American people are not falling for" Trump's divisive rhetoric.

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8:05 p.m.

Cory Booker is calling for the Democratic party to unite around Hillary Clinton — and the Democratic senator from New Jersey says Clinton would be a champion for the poor as president.

Remarks of Booker's speech at the party's convention have come out before his remarks later Monday. He says Clinton would measure America's greatness not by the number of millionaires and billionaires, but by how few people are living in poverty.

Booker says the country doesn't always have to agree, but the U.S. can't became a place "where our highest aspiration is that we just tolerate each other."

Booker also champions debt-free college, which he says represents the best of the Democratic party.

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8 p.m.

Sen. Kirsten Gillibrand (KEER'-sten JIHL'-uh-brand) says Hillary Clinton is the presidential candidate for paid family leave and equal pay for women.

The New York lawmaker says Clinton's life work has been defined by this single question: "How we help those who need it most?"

Gillibrand says that stands in contrast to what she says is Donald Trump's defining question: "How can I help myself most?"

Excerpts of Gillibrand's speech were released before she was to take the podium at the Democratic National Convention on Monday night.

Gillibrand, who succeeded Clinton as a New York senator, says: "The choice in this election couldn't be clearer."

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7:55 p.m.

Singer Demi Lovato is belting out her hit "Confident" at the Democratic National Convention.

Lovato performed for presidential candidate Hillary Clinton in Iowa during the campaign, and she's one of the first bold-faced names to appear on the convention stage.

The convention opened with a performance from Boys II Men. Paul Simon is set to perform later Monday, and delegates are set to hear from actress and activist Eva Longoria.

Before performing, Lovato told the crowd of delegates at the Wells Fargo Center in Philadelphia that "like millions of Americans, I am living with mental illness."

She says, "But I am lucky. I had the resources and support to get treatment at a top facility." She says Hillary Clinton will help Americans in need of care get the treatment they require.

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6:55 p.m.

Hillary Clinton may not be in Philadelphia yet, but her husband has started the charm offensive at the Democratic National Convention.

An aide to former President Bill Clinton has met with members of Congress during a private reception at the Wells Fargo Arena.

Hillary Clinton plans to spend the night at her home in suburban New York after campaigning earlier in North Carolina.

The Clinton campaign has been careful not to have Bill Clinton overshadow his wife's efforts. But he's been an effective supporter, often speaking in smaller cities where Hillary Clinton might not have time to campaign.

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6:50 p.m.

"I wouldn't vote for her for dog catcher."

That's the sentiment of a Bernie Sanders delegate when talking about whether she'd support Hillary Clinton.

"No, never in a million years" — Melissa Arab of Shelby Township, Michigan, is making abundantly clear.

She says she's going to work as hard as she can to make Sanders the Democratic nominee for president.

She says "that's what I'm pledged to do and that's what Bernie told me to do."

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6:20 p.m.

Bernie Sanders' supporters are getting plenty of time at the podium at the Democratic National Convention.

Some key backers of the Vermont senator were late additions to Monday night's program — in an effort to promote party unity.

Tensions are simmering on the convention's opening night as Sanders' allies celebrate the onetime presidential candidate and advocate for Hillary Clinton's election.

Among those added are two strong Sanders supporters — Maine lawmaker Diane Russell and former NAACP president Ben Jealous.

Jealous is praised the party platform and saying, "Join us at the ballot box and we will elect Hillary Clinton as president of these United States."

Some frustrated Sanders fans are continuing to boo at the mention of Clinton's name.

5:50 p.m.

Bernie Sanders may have asked his supporters as a "personal courtesy" not to protest at the Democratic convention — but not everyone's willing to heed that request.

Michigan delegate Bruce Fealk says he understands Sanders' position and understands why the Vermont senator is making the request.

But Fealk also says: "I'm really annoyed. ... I haven't decided yet. I want to support Bernie, but I also want to voice my displeasure with the Democratic Party."

Fealk says he sees the hacked party emails as a revelation, and says they show the party's disrespect for progressives.

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5:35 p.m.

A Bernie Sanders supporter has taken the stage at the Democratic convention and has two missions.

Diane Russell — a Maine lawmaker — is trying to sell delegates on the compromise that's been reached on the future role of superdelegates in the nominating process.

And she's stressing her support for Hillary Clinton.

Russell led an effort to abolish superdelegates — they're the party insiders who can cast their convention vote for the candidate of their choice.

She's using her convention speech to praise a deal by the party's rules committee that establishes a commission" to review the nominating process.

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5:25 p.m.

A Democratic official says Bernie Sanders' campaign has urgently reached out to Hillary Clinton's team to express concerns that tensions are still raw among Sanders delegates.

They're fuming about hacked party emails that already have led to the ouster of the head of the Democratic National Committee, Debbie Wasserman Schultz.

Aides to Clinton and Sanders have met in hopes of forming a plan to avoid excessive disruptions on the convention floor.

The Democratic official spoke on condition of anonymity in order to discuss the private discussions.

Sanders has sent out a text message and an email to delegates urging them not to engage in protests on the floor as a "personal courtesy" to him.

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5:05 p.m.

Bernie Sanders is urging supporters not to demonstrate on the floor of the Democratic National Convention.

He's sending out text messages and emails with his personal request.

Sanders is characterizing the request "as a personal courtesy to me" and urging his followers to "not engage in any kind of protest on the floor."

The Vermont senator says it is of the "utmost importance" that this be explained to the state delegations.

Sanders say "our credibility as a movement will be damaged by booing, turning of backs, walking out or other similar displays."

The challenger to Hillary Clinton is speaking later Monday at the Philadelphia convention.

It comes as many of his supporters contend the Democratic National Committee failed to be neutral during the primaries.

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5 p.m.

The Ohio congresswoman who's the chair of the Democratic National Convention is getting an earful from a rowdy group of delegates in the convention's opening moments.

During Marcia Fudge's opening remarks, she is being halted by boos and chants from Bernie Sanders' delegates at any mention of presumptive nominee Hillary Clinton.

But also cheers — from Clinton's supporters. At one point, there were chants of "Let her speak!"

Fudge is asking for respect and promising to deliver it in turn.

She says, "We are all Democrats and we need to act like it."

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4:55 p.m.

Donald Trump is suggesting China may have been involved in the hack of the Democratic National Committee's email system — even though there's no evidence to indicate Chinese involvement.

Trump made the comment at an event in Virginia — and it comes in reference to the decision by Democratic National Committee head Debbie Wasserman Schultz to step down in the wake of the email disclosure.

Here's what Trump said, with sarcasm: "Little did she know that China, Russia — one of our many, many friends — came in and hacked the hell out of us."

The cybersecurity firm CrowdStrike Inc. discovered traces of at least two sophisticated hacking groups on the Democrats' network — and both have ties to the Russian government.

Trump's campaign has laughed off suggestions that the Russians may be trying to influence the election in the Republican's favor.

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4:50 p.m.

Donald Trump says Hillary Clinton made a mistake when she picked Tim Kaine as her running mate. Trump says the Virginia senator is "the opposite" of what supporters of Clinton rival Bernie Sanders wanted.

Trump says Clinton should have picked a more liberal running mate to satisfy Sanders' supporters.

Trump calls Kaine "a weird little dude" and a political "hack," and says Kaine's record is far eclipsed by that of the GOP vice presidential candidate, Indiana Gov, Mike Pence.

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4:45 p.m.

The Democratic National Committee is offering its "deep and sincere apology" to Bernie Sanders, his supporters and the entire party for what it calls "the inexcusable remarks made over email."

The statement from incoming interim party leader, Donna Brazile, and six other officials says the comments in the emails "do not reflect the values of the DNC or our steadfast commitment to neutrality during the nominating process."

The statement says the party won't tolerate disrespectful language.

The statement wasn't signed by the outgoing DNC head, Debbie Wasserman Schultz.

She announced on Sunday that she'd step down from that job at the end of this week's Democratic National Convention in Philadelphia.

The emails suggested party officials favored Clinton over rival Sanders during the primaries.

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4:15 p.m.

Democrats have gaveled in their convention in Philadelphia — after a day of discord that sent the party chief into exile.

It was Baltimore's mayor, Stephanie Rawlings-Blake, who called the 47th Democratic convention to order. Her formal welcome was briefly extended by a slight oversight — she left the podium without actually pounding the gavel, then hurried back to pick up the gavel and perform the task.

Rawlings-Blake is a last-minute fill-in Debbie Wasserman Schultz, the ousted Democratic National Committee leader.

The Florida congresswoman was forced out of her post by a trove of leaked emails that appeared to show DNC officials favored Hillary Clinton over Sanders in their fierce primary fight. She's set to step down from the party job after the convention.

Rawlings-Blake serves as secretary of the DNC.

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This story has been corrected to reflect that the Baltimore forgot to use the gavel to open the convention, not that she forget to bring it on stage.