WASHINGTON, Nov 24 (Reuters) -- Democrat Hillary Clinton on Tuesday won the endorsement of the 500,000-member Laborers' International Union of North America, bolstering her lead for the party's nomination in the November 2016 presidential race.
"LIUNA members and leadership believe that Secretary Clinton is the right leader to move our country forward and the most qualified candidate to address the many challenges facing the United States," the union, which represents construction workers and public service employees, said in a statement.
"LIUNA members are deeply concerned about the direction of our country and are looking for a real leader who will create good jobs, rebuild our country, and grow our economy," the Washington-based union said. "Secretary Clinton's record proves that she is a tough and tested fighter for our nation and for working men and women."
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Clinton wins another union endorsement in US presidential race
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)
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The latest endorsement boosts the former U.S. secretary of state's hold on Democratic support over her closest rival, U.S. Senator Bernie Sanders of Vermont, who has struggled to lock down major union support despite longstanding ties with the labor movement.
In a statement, Clinton said, "I am honored to have earned the endorsement of the Laborers' International Union of North America, one of the fastest-growing and most diverse unions in the country.
"I have always stood with organized labor and working Americans, and I will stand with them and fight for them as president," she said. "Because when workers are strong, families are strong - and when families are strong, America is strong."
Clinton has won the support of several key union organizations over the past several weeks, including the Service Employees International Union and the ironworkers' union.
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Clinton wins another union endorsement in US presidential race
Arkansas Governor Bill Clinton comforts Hillary Rodham Clinton on the set of the news program '60 Minutes' after a stage light unexpectedly broke loose from the ceiling and knocked her down, January 26, 1992. (Photo by CBS Photo Archive/Getty Images)
NEW YORK, NY - JULY 14: Certain Democratic presidential nominee Bill Clinton (R) is applauded by his wife Hillary 14 July 1992, before his address to the Women's Caucus of the 1992 Democratic National Convention, New York. Clinton is campaigning in New York along with his running mate Sen. Al Gore. (Photo credit should read MARK PHILLIPS/AFP/Getty Images)
1993: American statesman Bill Clinton, the 42nd President of the United States, and his wife, lawyer Hillary Rodham Clinton, have a laugh together on Capitol Hill, Washington DC. (Photo by Consolidated News Pictures/Getty Images)
WASHINGTON, DC - APRIL 27: First Lady Hillary Clinton (L) laughs after introducing US President Bill Clinton 27 April in the East Room of the White House in Washington, DC. The President and First Lady were attending a celebration marking the 25th anniversary of the Kennedy Center. (Photo credit should read RICHARD ELLIS/AFP/Getty Images)
SAN DIEGO, : US President Bill Clinton (R) gets a hug from his wife Hillary after the presidential debate 16 October at Shiley Theater at the University of San Diego in California. This is the last debate prior to the 05 presidential election. AFP PHOTO Vince BUCCI (Photo credit should read Vince Bucci/AFP/Getty Images)
WASHINGTON, : US President Bill Clinton (R) leans towards US First Lady Hillary Clinton 17 July in the East Room of the White House during a ceremony for the Friends of Art and Preservation in Embassies Program. Arkansas court watchers are expecting President Clinton to testify by videotape 17 July in the criminal trial of two former associates. (ELECTRONIC IMAGE) AFP PHOTO/Paul J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
291964 06: (NO NEWSWEEK - NO USNEWS) President Bill Clinton and his wife Hillary dance at an inaugural ball January 20, 1997 in Washington, DC. Clinton attended various inaugural balls after his defeat of Bob Dole in the national presidential election. (Photo by Cynthia Johnson/Liaison)
PHILADELPHIA, : US President Bill Clinton has his chin pinched by First Lady Hillary Clinton during kick-off ceremonies for the Presidents' Summit for America's Future at the Marcus Foster Stadium 27 April in Philadelphia, PA. The Clintons were joined by the Vice President, and former Presidents Bush, and Carter for the volunteerism campaign. AFP PHOTO PAUL J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
ST. THOMAS, UNITED STATES: US President Bill Clinton and First Lady Hillary Clinton dance on the beach of Megan Bay, St. Thomas, US Virgin Islands 04 January shortly after taking a swim. The President and his family concluded their vacation on the tropical island and are returning to Washington. (ELECTRONIC IMAGE) AFP PHOTO/PAUL J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
WASHINGTON - SEPTEMBER 10: (NO U.S. TABLOID SALES) U.S President Bill Clinton and First Lady Hillary Clinton smile at each other during a Democratic Business Leaders event September 10, 1998 in Washington D.C. (Photo by David Hume Kennerly/Getty Images)
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Clinton holds 38 percent Democratic support - a nearly 10-percentage-point lead over Sanders - according to a Nov. 20 Reuters/Ipsos five-day rolling poll.