ALBANY

The atheist lobby, in the blond, pregnant person of Jennifer Lange, waited with diminishing patience for the elevator in the Legislative Office Building.

Ms. Lange checked her watch one last time, then rounded a corner into the corridor and skipped down four flights of stairs. The back way to Assemblyman Richard L. Brodsky’s office was just one of those useful things she knew about the inner workings of Albany.

Ms. Lange’s mission on this Monday in early February was to scuttle a bill titled the Religious Freedom Restoration Act, which she and every legislator on her agenda called in their common insiders’ slang Rifra. Of the nearly 10,000 pieces of legislation introduced annually in the New York State Legislature, the act was one of only several dozen brought under the lead sponsorship of the Assembly’s speaker, Sheldon Silver. It was not going to be an easy target.