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.

Tulsi Gabbard has faced scrutiny for her support of Edward Snowden, a former government contractor who leaked information about U.S. intelligence programs.

Republicans and Democrats on the Senate Intelligence Committee grilled Gabbard on her foreign policy positions and her views about Edward Snowden.