Secretary of Defense Robert Gates has ordered an early release of a Pentagon report on repeal of “Don't Ask, Don't Tell,” the 17-year-old law that bans gay and bisexual troops from serving openly.

Officials announced they'll release the long-awaited report on November 30, one day earlier than planned.

The Senate's Democratic leadership has pledged to vote on a defense bill that includes language that would repeal the law that has ended the military careers of over 13,000 service members after the Thanksgiving break.

Senators consider the report's findings crucial and had urged Gates for an early release so that the Senate Armed Services Committee could hold hearings on it prior to a floor vote.

“Secretary Gates is pushing all involved in the Comprehensive Review Working Group's report to have it ready for public release on Nov. 30 in order to accommodate the desire of the Senate Armed Services Committee to hold hearings as soon as possible,” Pentagon Press Secretary Geoff Morrell said in a statement.

The development should be good news to beleaguered repeal backers who are racing to end the law before Republicans take over the House and increase their numbers in the Senate in January. Senate Republicans, led by Arizona Senator John McCain, blocked a similar effort in September. Several GOP senators have suggested they're leaning in favor of voting for repeal.

The report is expected to conclude that a majority of service members are okay with serving and living alongside openly gay troops, according to Washington Post sources.

About 40 percent of Marines object to repeal and Marine Corps leaders have publicly supported the policy. On Sunday, Joint Chiefs of Staff Chairman Admiral Mike Mullen said he was confident that the Marines will follow orders if Congress decides to repeal “Don't Ask, Don't Tell.”