“Sen. Savino found the invitation unusual enough to turn to one of Sen. Klein’s staff members present to ask if he had heard the invitation,” Mr. Klein’s lawyers wrote.

Ms. Vladimer, who was not immediately reachable for comment, painted a far different picture of Mr. Klein’s behavior, and its effect on her life. A month after that night, Ms. Vladimer said she left Mr. Klein’s office. (The senator’s lawyers’ report confirmed her departure, but a spokeswoman for the senator said later that Ms. Vladimer had already been looking for a job before the night in question.)

Ms. Vladimer added that after the senator had kissed her that night, she pulled away. “I said, ‘Senator, absolutely not.’” she said to HuffPost. “And he looked at me and said, with this stupid little grin on his face, ‘What? What?’”

Ms. Vladimer said she soon left the bar and went to a friend’s house, where she broke down, according to the friend, who was not identified in the article.



State Senator Liz Krueger, a Manhattan Democrat, said that she had been approached for advice by Ms. Vladimer about two weeks ago. Although Ms. Krueger said she did not initially ask which senator was involved, to avoid any potential bias, she said she immediately found Ms. Vladimer to be credible.

“She said she was absolutely not doing this because she wanted a payday,” Ms. Krueger, an outspoken supporter of women’s issues in Albany, said in a phone interview on Wednesday.

Mr. Klein’s group, the Independent Democratic Conference, has been collaborating with Republicans in the State Senate since 2011, helping the G.O.P. run Albany’s upper chamber, much to the chagrin of many progressive groups and a group of traditional Democrats led by Senator Andrea Stewart-Cousins, also of Westchester County.