The NAACP’s board of directors voted Saturday to endorse the right to same-sex marriage, adding the influential voice of the country’s leading black civil rights organization to a debate that has divided the black community.

The decision has political implications for President Obama, who needs an enthusiastic turnout from black voters to help him win re-election in November but angered some black church pastors with his announcement this month that he believes gays and lesbians should have the right to marry.

The NAACP now presents itself as a counterbalance to the influence of the traditionally socially conservative black church. It can also help establish closer ties between blacks and gays, two of Obama’s most loyal constituencies.

Some pro-Republican conservative evangelical activists have said Obama’s announcement gives them an unusual opportunity to deflate enthusiasm among black voters for re-electing the country’s first black president, who tends to win more than 90 percent support in that community.

“Civil marriage is a civil right and a matter of civil law,” NAACP President Benjamin Todd Jealous said in a statement released Saturday. “The NAACP’s support for marriage equality is deeply rooted in the Fourteenth Amendment of the United States Constitution and equal protection of all people. The well-funded right-wing organizations who are attempting to split our communities are no friend to civil rights, and they will not succeed.”

The Human Rights Campaign, a leading gay rights group, issued a jubilant statement following the NAACP announcement. “We could not be more pleased with the NAACP’s history-making vote today, which is yet another example of the traction marriage equality continues to gain in every community,” said HRC president Joe Solmonese. “It’s time the shameful myth that the African-American community is somehow out of lockstep with the rest of the country on marriage equality is retired — once and for all. The facts and clear momentum toward marriage speak for themselves.”

Surveys show blacks remain generally uncomfortable with same-sex marriage. A Washington Post-Kaiser Family Foundation poll in November found that 58 percent of blacks called same-sex marriage “unacceptable,” while 35 percent said it was “acceptable” in terms of their own values and morals.

More than half of all blacks in a new Post-ABC News poll backed the president’s statement in support of marriage, suggesting there may be an opening to for Obama to help push support for gay rights among blacks.

The resolution approved Saturday states: “The NAACP Constitution affirmatively states our objective to ensure the ‘political, education, social and economic equality’ of all people. Therefore, the NAACP has opposed and will continue to oppose any national, state, local policy or legislative initiative that seeks to codify discrimination or hatred into the law or to remove the constitutional rights of LGBT citizens. We support marriage equality consistent with equal protection under the law provided under the Fourteenth Amendment of the United States Constitution.”