Support for gay marriage among African Americans in North Carolina has increased 7 percentage points since President Barack Obama announced last week that he supports such unions.

According to a Public Policy Polling survey taken before the primary last week, only 20 percent of black voters in the state favored gay marriage. Twenty-seven percent of respondents to a poll taken this week said they approved of gay nuptials. Opposition to marriage equality fell 4 points, from 63 percent to 59 percent.

When civil unions are included, the increase is greater. Before the primary, 44 percent of African Americans supported giving gay couples legal rights in the form of either marriage or civil unions. Now 55 percent of blacks say they support one of those unions.

President Obama made this public announcement last Wednesday, the day after North Carolina voters approved Amendment One, the constitutional amendment which bans the state from recognizing gay couples with marriage, civil unions and possibly domestic partnerships.

“Obama's words looks to be having an impact,” Tom Jensen wrote in a blog post publishing the poll's findings.