A source with knowledge of the proceedings told ABC News that newly confirmed CIA Director John Ratcliffe, former NSA adviser Robert O'Brien and former Sen. Richard Burr, a former Senate Intelligence Committee chairman, have been making calls to senators on Gabbard's behalf. Gabbard has also talked to senators since her hearing, a source said.

The Senate Intelligence Committee will meet Tuesday to vote on Tulsi Gabbard's nomination to lead the Department of National Intelligence.

Tulsi Gabbard, President Donald Trump’s controversial pick to lead U.S. intelligence agencies, escapes from a close committee ballot and heads to a full Senate vote.