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Developments from the campaign trail.

The latest developments from the campaign trail leading up to the vice presidential debate.

The president tweeted late Thursday night that he and the first lady tested positive for COVID-19. The news comes after an adviser, Hope Hicks, also tested positive.

The most important issues to voters across the country leading up to the first presidential debate.

Dr. Anthony Fauci and experts analyze why the pandemic is wreaking havoc on communities, and the lessons we can learn from pandemics throughout history.

Watch as SpaceX and NASA work together to send astronauts Robert Behnken and Douglas Hurley to space.

Behind the scenes of the game show.

Democratic presidential hopefuls discuss the issues at Saint Anselm College in New Hampshire.

President Donald Trump's address to the nation, and the Democratic response from Gov. Gretchen Whitmer (D-Mich.).

A look at the cultural significance of the two series.

Trump addresses the nation in State of the Union

Stars reconnect with their roots.

Interviews and updates from country stars who have discussed their lives with Robin Roberts throughout the years.

The Last Days of Michael Jackson; An exploration of the "King of Pop's" life and legacy; never-before-seen interviews with Jackson reveal his thoughts about work and relationships; interviews with...

Revisit unforgettable moments from Oscars past and get a first look inside the new Academy of Motion Picture Arts and Sciences museum.

Revisit unforgettable moments from Oscars past and get a first look inside the new Academy of Motion Picture Arts and Sciences museum.

President Trump delivers his first State of the Union Address

Robin Roberts and an all-star team of ABC News anchors and correspondents take a look back at the historic and most memorable moments of 2017.

A celebration of legendary stars and icons including Don Rickles, Chuck Berry, Mary Tyler Moore, David Cassidy and more who passed away during 2017 and the legacies they left behind; friends,... more

Robin Roberts presents a look at how American superstar Luke Bryan and his family triumphed over tragedy and pulled through an unimaginable year.

The president provided new guidance for his South Asia strategy.

On two consecutive nights in 1969, followers of cult leader Charles Manson murder seven people, including eight-month pregnant actress Sharon Tate; interviews with Manson, and former cult members Leslie Van Houten and Patricia Krenwinkel.

Gay rights activists Cleve Jones, Roma Guy, Ken Jones, Diane Jones and Cecilia Chung talk about their part in the movement; interviews with stars of the miniseries, "When We Rise.''

President Donald Trump addresses a joint session of Congress followed by commentary and summation by ABC News staff.

Red carpet interviews with celebrities outside of the prestigious Governor's Ball; backstage interviews with Oscar winners; Anthony Anderson hosts with Lara Spencer and special contributors Joe Zee and Chris Connelly.

The nominees at this year's Oscars weren't always big stars; they all got their start in small roles.

Showcasing some of Barbara's frankest, funniest and most fascinating interviews with Oscar nominees of years past.

President Trump speaks with David Muir in his first interview since taking the oath of office to become the 45th president of the United States.

At his farewell address in Chicago, President Obama shares reflections on the accomplishments of his administration and thoughts on the challenges ahead.

2016 Game Changers with Robin Roberts; ABC News anchor Robin Roberts travels across the country to spend time with the innovators, philanthropists, athletes and entertainers who left an unforgettable mark on 2016.

Highlights of some of the most newsworthy moments of 2016; interviews with personalities of the year include the stars of "Stranger Things," rapper DJ Khaled, Olympians Laurie Hernandez and Simone...

All Access Nashville: Celebrating the CMA Awards with Robin Roberts Highlights of memorable moments at the CMA Awards and performances by country music stars at Tootsie's in Nashville.

Hillary Clinton and Donald Trump met for the third and final time at UNLV.

Hillary Clinton and Donald Trump sparred at Washington University in St. Louis.

2016 Vice Presidential Debate; Vice Presidential candidates Sen. Tim Kaine and Gov. Mike Pence met at Longwood University in Farmville, Va.

First Presidential Debate: Presidential candidates Hillary Clinton and Donald Trump meet at Hofstra University.

Co-hosts and celebrity fans share stories and memorable moments from the show's first 19 years.

David Muir moderates a conversation about race relations, justice, policing and equality, with President Barack Obama and Americans who have been directly affected by recent events in Baton Rouge, Minneapolis and Dallas.

GOP presidential candidates meet head to head in the last debate before the New Hampshire primary.

President Obama delivers "Focus On Our Future" State of the Union address.

A review of memorable moments from 2015, including Pope Francis's historic visit to the U.S., the U.S. Supreme Court's ruling on marriage equality, and celebrity breakups; anchored by Robin Roberts.

Presidential candidates Hillary Clinton, Bernie Sanders and Martin O'Malley square off in the third Democratic debate from New Hampshire.

Barbara Walters interviews some of the year's top newsmakers, including Bradley Cooper, Amy Schumer, Tracy Morgan, Ronda Rousey, Bernie Sanders, Misty Copeland, and Donna Karan.

The making of the 1934 full-length animated film ``Snow White and the Seven Dwarfs''; Ginnifer Goodwin narrates.

With help from some of country music's biggest stars and industry insiders, Robin Roberts and ABC count down the top 15 country chart-bending, crossover hits, just in time for the 49th Annual CMA Awards.

Robin Roberts visits areas affected by Hurricane Katrina and recounts the stories of survivors and volunteers who have worked to rebuild the region.

Secrets of Storybrooke revealed

Check out a list of iconic films that changed the face of American cinema forever.

President Obama strives for "better politics" and Sen. Joni Ernst delivers the Republican response.

What We Were Most Addicted to in 2014; The Videos That Went Viral This Year; In Memoriam: Icons We Lost This Year

Jesse Tyler Ferguson brings you behind the scenes of hit Disney plays on Broadway, including "Lion King" and "Mary Poppins."

Neil Patrick Harris Reveals the One Thing He Can't Do; Michael Strahan on Who He Owes Part of His Success To

Family Might Expand for Couple Who Fostered 92 Kids; What Taylor Swift Is Most Thankful For This Thanksgiving; Why Thanksgiving Is President Obama's Favorite Holiday

Ferguson police officer Darren Wilson breaks his silence to ABC News for the first time publicly since fatally shooting Michael Brown.

Hunter Hayes Performs Johnny Cash's "Folsom Prison Blues"; Martina McBride Performs Tammy Wynette's "Stand By Your Man"

Amy Robach goes behind the scenes of the Miss America Pageant.

Clinton talks about everything from her marriage and her health to being secretary of state and running for president.

A look at the life and career of the trailblazing journalist.

The Art of the 'Shark Tank' Pitch; Investment Flops and Successes

President Obama delivers "Opportunity For All" State of the Union address.

Mysteries of the Castle: Beyond Downton Abbey

Shania Twain Makes Her Comeback; Behind the Scenes with the Cast of "Nashville".

Prince William, Duchess of Cambridge welcome healthy baby boy to their royal family.

Barbara Walters' 'Most Fascinating People' for 2013

President Obama addresses nation's frustration over acquittal of George Zimmerman in shooting death of Trayvon Martin.

President Obama addresses nation's frustration over acquittal of George Zimmerman in shooting death of Trayvon Martin.

Jury acquits George Zimmerman of second degree murder in shooting of Trayvon Martin.

In the Spotlight: Countdown to the CMA Awards

Pakistani girl celebrates her 16th birthday on day she speaks to United Nations' student delegates.

Christiane Amanpour's ABC News special explores the stories of the Bible from Genesis to Jesus.

High court strikes down a key section in the Defense of Marriage Act.

Christiane Amanpour's ABC News special explores the stories of the Bible from Genesis to Jesus.

President Barack Obama details counter terrorism priorities, addresses heckler during speech.

A look at the 10 most fascinating people of 2012.

The departing pontiff holds a meeting with the College of Cardinals.

Live coverage of the presidential debate from Lynn University in Boca Raton.

President Obama outlines his plans on the budget, job creation, global affairs and domestic issues.

Live coverage from the presidential debate between Barack Obama and Mitt Romney.

The president discusses actions being taken and legislation he will propose to stem gun violence.

This episode has live coverage from Danville, Kentucky of the vice presidential debate between Joe Biden and Paul Ryan.

The president addresses questions on the debt ceiling, spending cuts and gun control during news conference on his first term.

The Candidates Debate: President Obama and Mitt Romney face off in the first presidential debate in Denver, Colorado.

Gunman accused of opening fire at a movie theater is seen in public for the first time.

The president responds to Supreme Court's ruling, highlights law's impact.

The Supreme Court upheld the individual mandate in President Obama's health care law.

Katie Couric takes viewers backstage at the concert for the Queen.

President Obama delivers his annual state of the union address.

Crowds cheer and bells rang as white smoke from Sistine Chapel signals a new leader for the Catholic Church has been selected.

Your Voice, Your Vote: GOP presidential candidates debate in N.H.

Katie Couric's special looking back at 2011.

Barbara Walters' "The 10 Most Fascinating People of 2011"

A few American dreamers who work to improve the lives of many.

Behind the scenes of Keith Urban's, Kenny Chesney's and Faith Hill's tours.

The President of the United States of America announces that all U.S. troops will be out of Iraq by the end of the year.

President Obama remarks on the death of Libyan dictator Moammar Gadhafi.

At the United Nations General Assembly, President Obama says, There is no shortcut for peace between Israelis and Palestinians.

A behind-the-scenes look at the model industry.

Never-before heard recordings of former First Lady - Jacqueline Kennedy.

Cynthia McFadden reports on families torn apart by battles with food.

Inside the world of families raising transgender children.

Kelly Bates has been pregnant for the last 22 years and is planning for more.

Kris Jenner, Tori Spelling, Denise Richards and Rachel Zoe on motherhood.

Diane Sawyer Special on the kidnap victim Jaycee Dugard who speaks out in an exclusive interview.

NASA sends shuttle to space for the last time after a 30-year legacy.

News on: Casey Anthony is sentenced for lying to law enforcement officials but acquitted for the murder of her daughter.

Is Casey Anthony guilty of killing her own child? Go inside the riveting courtroom drama.

President Obama claims there can be no deficit reduction without tax hikes.

President Obama speaks about reform in the Middle East and North Africa.

Prince William and Kate Middleton's royal wedding.

The president hopes the disclosure will allow people to focus on other issues.

President offers humanitarian help as part of "international coalition."

President Obama makes his first comments on the nuclear crisis in Japan.

The Egyptian people are ready for change President Obama discusses this topic.

New that the armed forces will take leadership of Egypt says the Vice President Omar Suleiman.

The president stresses the need for cooperation in conquering future challenges.

Barbara Walters Special: Celebrities share their stories of heart surgery.

A memorial service is held for the victims of the shooting in Tucson, Ariz.

ABC News reports on the progress of relief efforts one year after Haiti's devastating earthquake.

Celebrities' weight-loss secrets, fad diets, drastic surgeries.

The president speaks about bipartisan progress following the midterm elections: START Treaty on Nuclear Arms Reduction; Repeal of 'Don't Ask, Don't Tell;' Health Aid to 9/11 Emergency Workers; Extension of Tax Cuts.

2010's memorable moments in the news, politics, entertainment and technology.

Holiday Gift Guide; Best and Worst Party Food; Unique Christmas Trees; Festive Carols.

Barbara Walters reveals the movers and shakers from 2010.

Media mogul says goodbye to namesake show to launch new network, OWN.

Reality TV star Heidi Montag, musician Pete Burns, and actress Janice Dickinson.

In the Spotlight With Robin Roberts: All Access Nashville

History of Halloween; DIY Costume Ideas for Kids; Creepy Treats; Extreme Jack-o-Lanterns; Make-Up Magic.

Bob Woodruff reports on how North Korea has changed over the past five years, and Kim Jong Ill appears at a military parade with son and heir Kim Jong Un.

President Obama announces the end of America's combat mission in Iraq.

David Muir, Bob Woodruff and Robin Roberts take a look at where things stand in the Gulf region five years after Hurricane Katrina.

Following Gen. Stanley McChrystal's Rolling Stone interview, the president nominates Gen. David Petraeus to take over command of troops in Afghanistan.

President Obama urges Republicans to support a bill to aid small businesses and addresses Mosque near ground zero at press conference.

In his first oval office address, President Obama outlines his plan to restore the Gulf.

President Obama delivers a statement about the BP oil spill and answers questions about the cleanup procedures.

Barbara Walters reflects on 29 years of Oscar specials and interviews 2010 nominees Mo'Nique and Sandra Bullock.

David Muir reports on the relief efforts and mass exodus in earthquake-ravaged Haiti.

In his first State of the Union address to Congress, President Obama focuses on the economy, health care and Iraq and Afghanistan.