After Gabbard faced a public questioning, one of senators three still on the fence—Susan Collins—now says she's a 'yes' vote.

Collins, a pivotal swing vote on the Senate Intelligence Committee, is expected to play a key role in advancing Gabbard’s nomination as the committee meets on Tuesday.

Democrats are united in opposition to her serving as the director of national intelligence. A single Republican no vote would complicate her confirmation by the full Senate.