With less than 3 weeks before Election Day, Maryland voters appear increasingly likely to uphold a gay marriage law approved by lawmakers.

According to a poll released Thursday by The Washington Post, a narrow majority (52%) of voters say they favor the law. Forty-three percent of respondents say they will vote against the legislation.

The measure's 9-point lead comes after opponents began airing ads calling on Marylanders to vote down Question 6, including one featuring Baltimore Ravens center Matt Birk.

A key demographic in the state is the African-American vote, which both camps have heavily targeted.

The Post poll found 56 percent of white voters support marriage equality, while 39 percent remain opposed. But opposition among black voters holds an 11-point lead: 42 percent of black voters support the measure, and 53 percent oppose it.

That's a stark difference to a Baltimore Sun poll released earlier this month which found less than a quarter of black voters against the measure.

“I think given the day and time we live in, and the progression of how society has changed, I would support same-sex marriage,” Lindsay, an African-American who lives in Temple Hills, told the Post. “If someone is your life partner, that person should be able to assist in making life-and-death decisions; it shouldn't be up to some family member you haven't seen in 20 years.”

High-profile African-Americans who have endorsed gay nuptials include President Barack Obama, the Rev. Al Sharpton and Baltimore Ravens linebacker Brendon Ayanbadejo.