Across the region, members of Alpha Kappa Alpha sorority are mobilizing to raise money for the Biden-Harris campaign, buying pink-and-green gear from T-shirts to face masks and lawn signs, and turning up plans to get out the vote in November. With more than 300,000 members, including a large contingency in the city, they are a formidable network.  Harris joined the sorority in 1986 at Howard University in Washington, where the sorority was founded in 1908. She has maintained a close relationship with her “line sisters,” the women who were initiated with her, and attended sorority conferences before the pandemic hit.  “This is a great moment for African American women,” said Glenda Glover, the sorority’s international president. “It’s a great moment for the country.”