A new poll finds a large majority of Americans back repeal of “Don't Ask, Don't Tell.”

According to a CBS News poll released Friday, sixty-nine percent of those surveyed believe gay men and lesbians should be able to serve openly in the military. That's a jump of seven points since October.

Twenty-three percent of Americans oppose open gay service. Fifteen percent strongly oppose repeal of the law. Another eight percent are opposed to change, but not strongly.

The survey's results arrive as the Senate concludes two days' worth of hearings on a Pentagon report that endorses repeal of the law.

Marine and Army leaders testified against repeal on Friday, while Secretary of Defense Robert Gates and the military's top uniformed officer, Admiral Mike Mullen, the chairman of the Joint Chiefs of Staff, endorsed ending the policy on Thursday.

Repeal depends mostly on whether Democrats can sway a sufficient number of Republicans to join the cause. Republicans in September united to block passage of the measure. However, several GOP senators have said they could vote for repeal, the latest being Scott Brown of Massachusetts on Friday.