A freelance journalist and former communications director for Congressman Alan Grayson, D-Fla., joined a group of more than half a dozen women who are accusing Sen. Al Franken, D-Minn., of sexual misconduct.

Tina Dupuy said Franken "knew exactly what he was doing" when he grabbed her waist and squeezed and twice while posing for a photo.

"Al Franken’s familiarity was inappropriate and unwanted. It was also quick; he knew exactly what he was doing," Dupuy wrote in an op-ed published by the Atlantic Wednesday. "It shrunk me. It’s like I was no longer a person, only ornamental. It said, 'You don’t matter — and I do.' He wanted to cop a feel and he demonstrated he didn’t need my permission."

Dupuy said she was at an inauguration party for former President Barack Obama when she saw Franken and asked him for a photo.

A flood of Franken's Democratic colleagues called for the senator to step down Wednesday afternoon after a female congressional aide said Franken tried to forcibly kiss her in 2006. Franken denied the allegation to Politico.

“This allegation is categorically not true and the idea that I would claim this as my right as an entertainer is preposterous. I look forward to fully cooperating with the ongoing ethics committee investigation,” Franken said in a statement.