Warner, who is the vice chairman and leading Democrat on the Senate intelligence committee, stood on the Senate floor before he voted for Haspel and said, "We should not overlook the historic nature of Ms. Haspel's nomination as the first woman to be nominated as director of the CIA".
"For more than a decade, the United States has failed to ensure truth, accountability, and access to remedy for victims of official U.S. torture and enforced disappearance".
He did not vote on Thursday.
Haspel, 61, is a native of Kentucky but grew up around the world as the daughter of an Air Force serviceman. While three Republican senators opposed her nomination, Haspel secured enough votes with the backing of six Democrats.
In 2002, Haspel supervised a secret prison in Thailand where harsh interrogations were conducted and she destroyed Central Intelligence Agency interrogation tapes years later. Yet, she did not vote for Haspel.
US Senate majority leader, Mitch McConnell called US President Donald Trump's choice of Haspel to lead the agency "the right woman at the right time".
The attacks on Haspel's record made Trump administration officials nervous about her nomination, especially after Paul announced his opposition, which meant Democrats had the ability to block Haspel's confirmation.
Her opponents argued that it wasn't right to promote someone who supervised a covert detention site in Thailand where terror suspects were waterboarded, an interrogation technique that simulates drowning.
Veteran intelligence officials praised Trump's decision to name Haspel deputy director in February 2017, including former Director of National Intelligence James Clapper.
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"No one has ever been held accountable for the torture program and I do not believe those who were intimately involved in it deserve to lead the agency", Feinstein said in a statement after voting against Haspel.
After her confirmation, President Donald Trump took to Twitter to congratulate new CIA Director.
Republican Senator John McCain, who has been away from Washington all year as he battles brain cancer, urged the Senate not to vote for Haspel.
It is that steely commitment over a 33 year career that has elevated Haspel to become the first woman to ever head the CIA, the premier USA espionage agency.
Six Democratic senators - Jeanne Shaheen of New Hampshire, Mark Warner of Virginia, Joe Manchin of West Virginia, Joe Donnelly of Indiana, Heidi Heitkamp of North Dakota and Bill Nelson of Florida - voted for her.
During the hearing, Haspel defended her past actions and refused to criticize her colleagues for their tactics at the time.
Meanwhile, two Senators who don't have to worry about answering to red-state voters during an election year extended their support for Haspel.
As for the other Democrats on the Senate Intellegence Committee, most did not side with their senior committee member.