Tulsi Gabbard, President Trump's pick to be director of national intelligence, faces a crucial vote on Tuesday that could doom or propel her nomination. The Senate Intelligence Committee will vote on her nomination in a closed session,

Sen. Todd Young revealed his plan to vote for Tulsi Gabbard in committee, boosting her odds of advancing to the floor and ultimately being confirmed.

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.