Former Vice President Joe Biden has suggested that Hillary Clinton failed to win the presidential election because she didn't address the concerns of middle-class Americans, reports CNN.

During a speech he gave at the University of Pennsylvania on Thursday, he said, about her loss, "What happened was that this is the first campaign that I can recall where my party did not talk about what it always stood for—and that is how to maintain a burgeoning middle class."

27 PHOTOS Hillary Clinton and Joe Biden together through the years See Gallery Hillary Clinton and Joe Biden together through the years U.S. Vice President Joe Biden (L) and former Secretary of State Hillary Clinton (R) attend a ceremony to unveil a portrait honoring retiring Senate Minority Leader Harry Reid (D-NV) on Capitol Hill in Washington, U.S. December 8, 2016. REUTERS/Jonathan Ernst US Secretary of State Hillary Clinton (L) is joined by her husband former US President Bill Clinton (R) and US Vice President Joe Biden as she is ceremonially sworn in at the State Department in Washington, February 2, 2009. REUTERS/Jonathan Ernst (UNITED STATES) Democratic presidential nominee Hillary Clinton welcomes Vice President Joe Biden as he disembarks from Air Force Two for a joint campaign event in Scranton, Pennsylvania, August 15, 2016. REUTERS/Charles Mostoller PORTSMOUTH, NH - MAY 11: Democratic presidential candidate Senator Hillary Clinton (D-NY) greets fellow presidential candidate Joe Biden (D-DE) in the lobby of the Sheraton Harborside Portsmouth after addressing the International Association of Fire Fighters Convention (IAFF) Conference May 11, 2007 in Portsmouth, New Hampshire. The IAFF is a labor union of fire fighters from the United States and Canada, formed in 1918, consisting of 280,000 members. (Photo by Darren McCollester/Getty Images) Democratic presidential candidate Hillary Clinton and Vice-President Joe Biden campaign together during an event in Scranton, Pennsylvania, August 15, 2016. REUTERS/Charles Mostoller Democratic presidential candidate Hillary Clinton and Vice-President Joe Biden wave to neighbors as they stopped to visit Biden's childhood home in Scranton, Pennsylvania, August 15, 2016. REUTERS/Charles Mostoller U.S. Vice President Joe Biden (L) and former Secretary of State Hillary Clinton (R) attend a ceremony to unveil a portrait honoring retiring Senate Minority Leader Harry Reid (D-NV) on Capitol Hill in Washington, U.S. December 8, 2016. REUTERS/Jonathan Ernst Democratic presidential candidate Hillary Clinton and Vice-President Joe Biden campaign together during an event in Scranton, Pennsylvania, August 15, 2016. REUTERS/Charles Mostoller U.S. Secretary of State Hillary Clinton (C) addresses a luncheon held in honor of German Chancellor Angela Merkel (L), as U.S. Vice President Joe Biden looks on at the State Department in Washington, June 7, 2011. REUTERS/Stelios Varias (UNITED STATES - Tags: POLITICS) UNITED STATES - AUGUST 15: Democratic presidential nominee Hillary Clinton and Vice President Joe Biden conduct a campaign rally at Riverfront Sports in Scranton, Pa., August 15, 2016. (Photo By Tom Williams/CQ Roll Call) Scranton, PA - AUGUST 15: Democratic Presidential nominee Hillary Clinton and US Vice President Joe Biden acknowledge the crowd at Riverfront Sports athletic facility on August 15, 2016 in Scranton, Pennsylvania. Hillary Clinton focused her speech on the economy and bringing jobs to the key swing state of Pennsylvania. (Photo by Mark Makela/Getty Images) U.S. President Barack Obama delivers a statement on the Afghanistan-Pakistan Annual Review from the White House Briefing Room with Vice President Joe Biden (L) and Secretary of State Hillary Clinton looking on in Washington December 16, 2010. The review said "notable operational gains" had been made and Taliban momentum had been "arrested" in much of the country and reversed in some areas, but any gains were fragile and reversible. REUTERS/Kevin Lamarque (UNITED STATES - Tags: POLITICS CIVIL UNREST CONFLICT) Combination images show U.S. Vice President Joe Biden and U.S. Secretary of State Hillary Clinton (R) sharing a laugh during the Lilly Ledbetter Fair Pay Act signing ceremony in the East Room of the White House in Washington, January 29, 2009. REUTERS/Jason Reed (UNITED STATES) Orangeburg, UNITED STATES: Democratic presidential hopefuls (L-R) US Senator Joe Biden, US Senator Barack Obama and US Senator Hillary Rodham Clinton arrive at the Democratic Party Presidential Primary Debate, 26 April 2007, at South Carolina State University in Orangeburg, South Carolina. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) Washington, UNITED STATES: US Democratic Senator from Nedw York Hillary Clinton (R) greets a member of Congress next to Democratic Senator from Delaware Joe Biden (C) as they arrives for US President George W. Bush's annual State of the Union address to a joint session of Congress at the Capitol in Washington 23 January 2007. AFP PHOTO/Larry Downing/Pool (Photo credit should read LARRY DOWNING/AFP/Getty Images) U.S. President Barack Obama (2nd L) and Vice President Joe Biden (L), along with members of the national security team, receive an update on the mission against Osama bin Laden in the Situation Room of the White House, May 1, 2011. Also pictured are Secretary of State Hillary Clinton (2nd R) and Defense Secretary Robert Gates (R). Please note: A classified document seen in this photograph has been obscured at source. Picture taken May 1, 2011. A pivotal moment in the long, tortuous quest to find Osama bin Laden came years before U.S. spy agencies discovered his hermetic compound in Abbottabad, Pakistan. REUTERS/White House/Pete Souza/Handout (UNITED STATES - Tags: POLITICS CIVIL UNREST MILITARY IMAGES OF THE DAY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS To match special report BINLADEN/KILL (SPECIAL REPORT) Orangeburg, UNITED STATES: Democratic presidential hopefuls (L-R) US Senator Joe Biden, New Mexico Governor Bill Richardson, US Senator Hillary Rodham Clinton arrive at the Democratic Party Presidential Primary Debate, 26 April 2007, at South Carolina State University in Orangeburg, South Carolina. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) Orangeburg, UNITED STATES: Democratic presidential hopefuls (L-R) US Senator Joe Biden, New Mexico Governor Bill Richardson, US Senator Hillary Rodham Clinton arrive at the Democratic Party Presidential Primary Debate, 26 April 2007, at South Carolina State University in Orangeburg, South Carolina. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images) Democratic presidential candidate U.S. Senator Hillary Clinton (D-NY)(L) and U.S. Senator Joe Biden (D-DE) speak after their debate at Howard University in Washington, June 28, 2007. REUTERS/Kevin Lamarque (UNITED STATES) U.S. Senator Hillary Clinton (D-NY) (R) is greeted by U.S. Senator Joseph Biden (D-De) at a Democratic Presidential Candidates Forum sponsored by AFSCME in Carson City, Nevada, February 21, 2007. REUTERS/Kimberly White (UNITED STATES) Democratic presidential candidate Hillary Clinton (D-NY) (L) and Senator Joe Biden (D-DE) listen as U.S. President George W. Bush delivers the final State of the Union address of his presidency in Washington January 28, 2008. REUTERS/Larry Downing (UNITED STATES) U.S. Democratic presidential candidate Senator Hillary Clinton (D-NY) speaks while Senator Joe Biden (D-DE) listens during the AFL-CIO Presidential Forum at Soldier Field in Chicago, August 7, 2007. REUTERS/John Gress (UNITED STATES) German Chancellor Angela Merkel (L) presents a gift to U.S. Secretary of State Hillary Clinton, as U.S. Vice President Joe Biden watches, during a luncheon held in Merkel's honor at the State Department in Washington June 7, 2011. REUTERS/Stelios Varias (UNITED STATES - Tags: POLITICS) U.S. Vice President Joe Biden and U.S. Secretary of State Hillary Clinton talk during a meeting between U.S. President Barack Obama and Prime Minister Recep Tayyip Erdogan of Turkey in the Oval Office at the White House in Washington December 7, 2009. REUTERS/Kevin Lamarque (UNITED STATES POLITICS) U.S. Vice President Joe Biden (C) speaks at the third annual U.S.-China Strategic and Economic Dialogue (S&ED) at the Department of the Interior in Washington May 9, 2011. Flanking Biden are Chinese Vice Premier Wang Qishan (L) and U.S. Secretary of State Hillary Clinton. REUTERS/Kevin Lamarque (UNITED STATES - Tags: BUSINESS POLITICS) U.S. Secretary of State Hillary Clinton speaks to Vice President Joe Biden as U.S. Middle East envoy George Mitchell (R) looks on during a meeting between U.S. President Barack Obama and Palestinian President Mahmoud Abbas in the Oval Office of the White House in Washington May 28, 2009. REUTERS/Kevin Lamarque (UNITED STATES POLITICS) U.S. Vice President Joe Biden (C), Indian Prime Minister Manmohan Singh (L) and U.S. Secretary of State Hillary Clinton toast during a luncheon at the State Department in Washington November 24, 2009. REUTERS/Yuri Gripas (UNITED STATES POLITICS) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

He added, "The truth of the matter is, you didn't hear a single solitary sentence in the last campaign about that guy working on the assembly line making $60,000 a year and a wife making $32,000 as a hostess in a restaurant. And they...making $90,000 and they got two kids and they can't make it. And they're scared, they're frightened."

The New York Times' Nate Cohn largely agreed with Biden; a week after the election was decided, he pointed out, "I think the bigger issue is that Democrats have either assumed they didn't need white working-class voters or took their support for granted."

He then said, "What part of Hillary Clinton's message was aimed at less educated white voters? It just wasn't at the core of her appeal this year. It was nothing like 2012, when President Obama relentlessly focused on the middle class, Bain Capital, the auto bailout, etc."

26 PHOTOS Hillary Clinton's 2016 campaign See Gallery Hillary Clinton's 2016 campaign BALTIMORE, MD - APRIL 10: Democratic presidential candidate Hillary Clinton holds a campaign rally at City Garage April 10, 2016 in Baltimore, Maryland. Voters will head to polling places for Maryland's presidential primary April 26. (Photo by Chip Somodevilla/Getty Images) Democratic U.S. presidential candidate Hillary Clinton laughs as she listens to Representative Steve Israel (D-NY) speak on a gun control panel in Port Washington, New York April 11, 2016. REUTERS/Lucas Jackson NEW YORK, NY - APRIL 09: Democratic presidential candidate Hillary Clinton holds a Latino organizing event on April 9, 2016 while campaigning in the Brooklyn Borough of New York City. The New York Democratic primary is scheduled for April 19th. (Photo by Andrew Renneisen/Getty Images) SPRINGFIELD, MA - FEBRUARY 29: Democratic presidential candidate former Secretary of State Hillary Clinton speaks during a 'Get Out The Vote' rally at the Lyman & Merrie Wood Museum of Springfield History on February 29, 2016 in Springfield, Massachusetts. Hillary Clinton is campaigning in Massachusetts and Virginia ahead of Super Tuesday. (Photo by Justin Sullivan/Getty Images) BOSTON, MA - Former Secretary of State Hillary Clinton speaks to supporters at the Old South Meeting Hall during a rally in Boston, Massachusetts on Monday February 29, 2016. (Photo by Melina Mara/The Washington Post via Getty Images) MINNEAPOLIS, MN - MARCH 01: Democratic presidential candidate former Secretary of State Hillary Clinton greets patrons at Mapps Coffee on March 1, 2016 in Minneapolis, Minnesota. Hillary Clinton is campaigning in Minnesota as Super Tuesday voting takes place in 12 states. (Photo by Justin Sullivan/Getty Images) MOUNT VERNON, IOWA - OCTOBER 7: Former Secretary of State Hillary Clinton speaks to voters during an outdoor town hall meeting at Cornell College in Mount Vernon, Iowa on Wednesday October 7, 2015. (Photo by Melina Mara/The Washington Post via Getty Images) MUSCATINE, IOWA - OCTOBER 6: Former Secretary of State Hillary Clinton speaks to a voter before leaving a farm in Muscatine, Iowa on Tuesday October 6, 2015. (Photo by Melina Mara/The Washington Post via Getty Images) MANCHESTER, NH - OCTOBER 05: Democratic presidential candidate Hillary Rodham Clinton holds a town hall meeting at the Manchester Community College on October 5, 2015 in Manchester, New Hampshire. Clinton spoke about the need for gun control on the wake of a mass shooting at another community college in Oregon. (Photo by Alfredo Sosa/The Christian Science Monitor via Getty Images) DAVIE, FL - OCTOBER 02: Democratic presidential candidate Hillary Clinton speaks about gun control during her campaign stop at the Broward College Ã Hugh Adams Central Campus on October 2, 2015 in Davie, Florida. Hillary Clinton continues to campaign for the nomination of the Democratic Party as their presidential candidate. (Photo by Joe Raedle/Getty Images) WASHINGTON, DC - SEPTEMBER 19: Hillary Clinton attends the Phoenix Awards Dinner at the 45th Annual Legislative Black Caucus Foundation Conference at Walter E. Washington Convention Center on September 19, 2015 in Washington, DC. (Photo by Earl Gibson III/Getty Images) MANCHESTER, NH - SEPTEMBER 19: Democratic presidential candidate Hillary Clinton claps on stage during the New Hampshire Democratic Party Convention at the Verizon Wireless Center on September 19, 2015 in Manchester, New Hampshire. Challenger for the democratic vote Sen. Bernie Sanders (I-VT) has been gaining ground on Clinton in Iowa and New Hampshire. (Photo by Scott Eisen/Getty Images) PORTLAND, ME - SEPTEMBER 18: Hillary Clinton brings her Democratic presidential campaign to Maine for the first time, speaking at King Middle School. Clinton is welcomed as she is introduced at the event. (Photo by Derek Davis/Portland Press Herald via Getty Images) CEDAR RAPIDS, IA - SEPTEMBER 7: Democratic Presidential hopeful Hillary Clinton takes time to meet supporters and take photos at the Annual Hawkeye Labor Council AFL-CIO Labor Day picnic on September 7, 2015 at Hawkeye Downs in Cedar Rapids, Iowa. Clinton spent a busy Labor Day weekend in Iowa, meeting supporters throughout the state while trying to maintain a lead over Bernie Sanders for the Democratic nomination. (Photo by David Greedy/Getty Images) US Democratic presidential candidate Hillary Clinton takes part in a discussion after speaking about the Iran nuclear deal at the Brookings Institution in Washington, DC, on September 9, 2015. Clinton expressed firm support for the nuclear accord with Iran, calling it flawed but still strong. Clinton added that the agreement must be strictly enforced and said that if elected president next year, she would not hesitate to use military force if Iran fails to live up to its word and tries to develop a bomb. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images) PORTSMOUTH, NH - SEPTEMBER 5: Democratic presidential candidate Hillary Clinton and U.S. Senator Jeanne Shaheen take an off the schedule stop in the River Run Bookstore before shaking hands with onlookers on September 5, 2015 in Portsmouth, New Hampshire. (Photos by Charles Ommanney/The Washington Post via Getty Images) PORTSMOUTH, NH - SEPTEMBER 5: Democratic Presidential candidate Hillary Clinton receives an endorsement from U.S. Senator Jeanne Shaheen (D-NH) September 5, 2015 in Portsmouth, New Hampshire. Clinton attended a Women for Hillary event at Portsmouth High School. (Photo by Darren McCollester/Getty Images) PORTSMOUTH, NH - SEPTEMBER 5: Democratic Presidential candidate Hillary Clinton walks downtown Portsmouth and takes pictures with people September 5, 2015 in Portsmouth, New Hampshire. Clinton attended a Women for Hillary event at Portsmouth High School earlier in the day and received an endorsement from U.S. Senator Jeanne Shaheen (D-NH). (Photo by Darren McCollester/Getty Images) LAS VEGAS, NEVADA - AUGUST 18: Former Secretary of State Hillary Clinton answers questions from journalists after speaking to north Las Vegas voters at a town hall meeting in Las Vegas, on Tuesday, August 18, 2015. The former Secretary was answering questions about emails sent and received a private server system, now in question, while she was the Secretary of State. (Photo by Melina Mara/The Washington Post via Getty Images) UNITED STATES - August 15: Democratic presidential candidate Hillary Rodham Clinton greets fairgoers as she tours the Iowa State Fair in Des Moines, Iowa, on Saturday, August 15, 2015. (Photo By Al Drago/CQ Roll Call) CARROLL, IA - JULY 26: Democratic presidential hopeful and former Secretary of State Hillary Clinton speaks to guests gathered for a house party on July 26, 2015 in Carroll, Iowa. Although Clinton leads all other Democratic contenders, a recent poll had her trailing several of the Republican candidates in Iowa. (Photo by Scott Olson/Getty Images) CHICAGO, IL - MAY 20: Democratic presidential hopeful and former Secretary of State Hillary Clinton arrives for a meeting with parents and child care workers at the Center for New Horizons on May 20, 2015 in Chicago, Illinois. Clinton arrived in Chicago after campaigning Monday and Tuesday in Iowa. (Photo by Scott Olson/Getty Images) LAS VEGAS, NV - MAY 05: Democratic presidential candidate and former U.S. Secretary of State Hillary Clinton (C) poses with students and faculty after speaking at Rancho High School on May 5, 2015 in Las Vegas, Nevada. Clinton said that any immigration reform would need to include a path to 'full and equal citizenship.' (Photo by Ethan Miller/Getty Images) NEW YORK, NY - APRIL 23: Hillary Rodham Clinton (L) and actress Maggie Gyllenhaal attend the 2015 DVF Awards at United Nations on April 23, 2015 in New York City. (Photo by Michael Stewart/FilmMagic) NEW YORK, NY - APRIL 29: Democratic presidential hopeful and former Secretary of State Hillary Clinton speaks during the David N. Dinkins Leadership and Public Policy Forum at Columbia University April 29, 2015 in New York City. Clinton addressed the unrest in Baltimore, called for police body cameras and a reform to sentencing. (Photo by Kevin Hagen/Getty Images) Hillary Clinton announced her campaign for president on Sunday April, 12, 2015 with a video on YouTube. (Screenshot from YouTube) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Meanwhile, in a recent report, CNN argues that "Clinton did attempt to speak to working class voters on the campaign trail...But the overarching message of her campaign, especially at the end, was more often anti-Donald Trump than policy messaging toward these voters."

The recent speech wasn't Biden's first time speaking out about Clinton's campaign; last December, he told the Los Angeles Times that he didn't think she ever figured out why she was running for president other than, perhaps, out of a sense of duty to women.

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