Atlanta’s McKenna Long & Aldridge has acquired the politically connected six-lawyer New York firm at which Gov. George E. Pataki was once a partner.

Plunkett & Jaffe, where Pataki was a partner from 1974 to 1987, will become the New York arm of 400-lawyer McKenna Long, which will gain offices in Manhattan and Albany. The Plunkett & Jaffe lawyers — William F. Plunkett, John S. Harris, Kelly M. Lamendola, Kathleen P. O’Connor, and William M. Mooney — will all join McKenna Long’s government affairs group, as will Plunkett’s son Timothy, whose admission to the bar is pending.