Then:Al Gore, vice president at the time, won the Democratic nomination in the 2000 campaign. After a tedious recount of the votes, he lost the presidential election to Republican George W. Bush.
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Now: In August 2005, Gore launched his television channel, Current TV, which he later sold to Al Jazeera. In 2007, he published "Assault on Reason," and received a Nobel Prize for his work on global warming. After 40 years of marriage, Gore and his first wife, Tipper, separated in 2010.
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Then:George W. Bush served as governor of Texas until December 21, 2000. He of course went on to become the 43rd president of the United States. His presidency was soon put to the test after the terrorist attacks on September 11, 2001.
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Now: In 2013, Bush opened the George W. Bush Presidential Library and Museum. Bush released "41: A Portrait of My Father," a biography of George H. W. Bush, on November 11, 2014.
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Then: Originally, Dick Cheney declined when George W. Bush asked him to be his running mate. Instead, he offered to help find a potential VP candidate. Months later, Bush extended the offer again, and he accepted.
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Now: Cheney made headlines in 2006 after accidentally shooting a fellow hunter in the face. In 2013, he released a medical memoir, "Heart: An American Medical Odyssey."
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Then: Joe Lieberman, then a U.S. senator from Connecticut, was the Democratic candidate for vice president. He was the first Jewish candidate on a national ticket.
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Now: Lieberman launched an unsuccessful bid for the Democratic presidential nomination in 2004. Lieberman ran as an independent candidate for Senate in 2006, and he supported Republican candidate John McCain in the 2008 presidential election. In January 2013, he retired from the Senate. Lieberman became a chairman of Victory Park Capital in 2014.
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Then: Then governor of Florida and the brother of Republican candidate, George W. Bush, Jeb Bush had a pivotal role in the 2000 campaign. On election night, Florida's votes were too close to call. Finally, the recount revealed that George Bush won Florida by a 537-vote margin.
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Now: Bush served as governor of Florida until 2007. In June 2015, he announced he was running for president.
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Then: Bill Daley served as Gore's campaign chairman. On election night, Daley announced on stage at the Memorial Plaza, "The race is simply too close to call and until the recount is concluded...our campaign continues."
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Now: In 2011, Obama announced that Bill Daley would be his new chief of staff. He served in that role for about a year before launching an unsuccessful gubernatorial campaign in Illinois.
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Then: Ron Klain left the Gore campaign in the fall of 1999, but he rejoined the effort during the last few months of the 2000 election. After election night, Klain became the lead Democratic lawyer during the recount.
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Now: Klain served as Vice President Joe Biden's chief of staff. In 2014, Obama appointed Ron Klain as the Ebola response coordinator, or the "Ebola czar." Since Klain did not have a medical background, there was controversy over this decision.
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Then: Joe Allbaugh started off as Bush's campaign manager. After Bush was elected, he became director of the Federal Emergency Management Agency (FEMA) in 2001.
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Now:Allbaugh left FEMA in March 2003. He also served as a campaign manager for Texas Gov. Rick Perry during the 2012 election.
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Then: James Baker served as Bush's recount chief after serving in the Reagan and George H.W. Bush administrations. He also played a large role in fighting the legal claims made by Gore's campaign over the controversy of the 2000 election.
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Now: Baker has been a family friend of the Bush family. However, in 2015 Jeb Bush said he was distancing himself from Baker because of Baker's criticisms of Israeli Prime Minister Benjamin Netanyahu.
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Then: Ted Olson represented Bush in the legal battle after the 2000 election.
Now: Boies, pictured, and Olson co-authored the book, "Redeeming the Dream: The Case for Marriage Equality."
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Then: David Morehouse was brought on as senior counselor for Gore's campaign. On election night, he stopped Al Gore from conceding the presidency. Now: In 2007, Morehouse became the president of the Pittsburgh Penguins. Three years later, he became the Penguins' chief executive officer.
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Then: Karen Hughes was Bush's spokesman during the 2000 campaign.
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Now: In 2001-2002, Hughes was as a counselor and strategic adviser to George W. Bush. In 2008, she became the worldwide vice chair for Burson-Marsteller, a public relations firm.
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Then: Ben Ginsberg served the Bush-Cheney presidential campaign as national counsel and played a key role in the recount.
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Now: Ginsberg, second from left, served as national counsel in Mitt Romney's 2008 and 2012 presidential campaigns. Ginsberg joined the law firm Jones Day in 2014.
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Then: Donna Brazile served as campaign manager Al Gore's 2000 presidential campaign.
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Now: In 2009, Brazile was chosen as one of the "remarkable visionaries" for O magazine. She is the author of the best-selling book, "Cooking with Grease" that was published in 2004. Today, she is a CNN political commentator.
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Then: Originally, Michael Whouley was an adviser to the Gore campaign. Now: Whouley served as John Kerry's senior adviser in 2004. At Dewey Square Group, he initiated "war room" campaigns for a number of Fortune 50 companies.
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Then: John 'Mac' Stipanovich is known for his work in the 2000 election recount. In Florida, he advised then-Florida Secretary of State Katherine Harris on how to continue with the election. He served as chief of staff for Florida Gov. Bob Martinez from 1987-1991. Now: Stipanovich's 30-plus years' experience in Florida's politics has dubbed him the nickname "the knife."