Gibson's career covering politics includes interviews with each of the last eight American presidents. He has anchored many broadcasts from Republican and Democratic national conventions, as well as presidential inaugurations. In 2004, he was chosen to moderate the debate between President Bush and Sen. John Kerry -- the debate was watched by 47 million people around the country.
When Gibson left "GMA" in June 2006, it was his intention to retire from ABC News the following year.
"But with Peter's illness, Bob's injuries, and Elizabeth [Vargas's] pregnancy, the job at 'World News' came open in May of 2006," Gibson said in the e-mail to the ABC staff. He was asked to step in as anchor. "It was an honor to do so."
Since being named anchor of "World News" in May 2006, Gibson has traveled around the country and world. When violence broke out between Israel and Hezbollah in 2006, Gibson traveled to the region and reported from both sides of the conflict. He also reported from Amman, Jordan, on the highly anticipated meeting between President Bush and Iraqi Prime Minister Nouri al-Maliki.
In 2006, Gibson interviewed President Bush onboard Air Force One, conducting a wide-ranging interview while Bush was en route to deliver a major speech on national security.
In April 2007, Gibson reported from the campus of Virginia Tech following the devastating school shooting. In October of that year, he traveled to Southern California where massive wildfires burned out of control.
During the 2008 election cycle, Gibson covered the pivotal primaries and caucuses, reporting from the scene in Iowa, New Hampshire and Texas. He moderated back-to-back presidential debates in Manchester, N.H., days before the first-in-the-nation primary in that state. Before Pennsylvania's highly anticipated primary, Gibson moderated a Democratic debate at the National Constitution Center in Philadelphia -- the most-watched debate of the primary season. He reported from the Democratic and Republican National Conventions and conducted several interviews with the presidential candidates.
On Nov. 4, 2008, Gibson anchored the network's election coverage along with Diane Sawyer and George Stephanopoulos. He announced the results of the election from ABC's studio in Times Square.
Gibson graduated from Princeton University. A native of Evanston, Ill., he grew up in Washington, D.C. He and his wife, Arlene, live in New York. The couple has two daughters and one grandson.