Tina Dupuy, a former Democratic Hill staffer and columnist, is the 8th woman to come forward with allegations of sexual misconduct against Sen. Al Franken. In Atlantic article, Dupuy wrote that Franken groped her while she took a photo with him in 2009. "We posed for the shot. He immediately put his hand on my waist, grabbing a handful of flesh. I froze. Then he squeezed. At least twice," she wrote.

Franken will make an announcement Thursday amid calls from dozens of Democratic senators for him to resign.