Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE acknowledged Monday that many millennial voters may not be sold on her candidacy, but the Democratic presidential nominee asked them to give her a “fair hearing.”

“I also know that even if you are totally opposed to Donald Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE, you still may have some questions about me. I get that,” she said during a rally at Temple University in Philadelphia.

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“And I want to do my best to answer those questions. When it comes to public service, the service part has always been easier for me than the public part. ... No one will work harder to make your life better.”

Polls suggest Clinton is struggling to win over young voters who were an important part of President Obama’s constituency in 2008 and 2012.

The relative strength of Libertarian nominee Gary Johnson Gary Earl JohnsonWhat the numbers say about Trump's chances at reelection Presidential race tightens in Minnesota as Trump plows resources into state The Hill's Campaign Report: Biden condemns violence, blames Trump for fomenting it l Bitter Mass. primaries reach the end l Super PAC spending set to explode MORE and Green Party nominee Jill Stein has Democrats worried young people will decide against Trump and Clinton and back an alternative.

Two polls last week found that a third of voters under the age of 30 were supporting third-party candidates.

The Clinton campaign in recent days has launched a concerted effort to win over young voters.

Bernie Sanders Bernie SandersJacobin editor: Primarying Schumer would force him to fight Trump's SCOTUS nominee Trump campaign plays up Biden's skills ahead of Cleveland debate: 'He's actually quite good' Young voters backing Biden by 2:1 margin: poll MORE and Elizabeth Warren Elizabeth WarrenJudd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report Biden's fiscal program: What is the likely market impact? MORE, two progressive senators who have support from legions of young Democrats, hit the swing-state trail over the weekend on Clinton's behalf. And she released an op-ed on Mic, a news website geared at millennials, timed with her speech.

On Monday, Clinton shared personal stories about her inspiration to go into public service, lauded those continuing the fight for racial justice and touted her work on free public college with Sanders, her former Democratic primary rival.

“Even all these years later, I confess I don't enjoy doing some of the things that come naturally to some politicians, like talking about myself,” she said while recounting a conversation with a 17-year-old that helped to prod her into her 2000 Senate bid.

“But I took that leap then for the same reason I'm running now — to level the playing field for children and families.”

Clinton acknowledged voters need a reason to vote for her, and she underlined her positions on climate change, income inequality and healthcare.

“You want something to vote for, not just against. Optimism, not resentment; answers, not anger; ideas, not insults; bridges, not walls,” she said.

When she turned to Trump, she cast him as a businessman who had discriminated against African-Americans and as a politician who flirts with racism.

“You also see a Republican nominee who incites hatred and violence unlike we've ever seen before,” she said. "We are facing a candidate with a long history of racial discrimination in his businesses, who retweets white supremacists, who led the birther movement to delegitimize our first black president and is still lying about it today."

“We have to stand up to his hate; we cannot let it go on. ... America is better than Donald Trump,” she added.