Are you looking to sway policy decisions or get the ear of San Francisco mayor Gavin Newsom? You should consider hiring Burson-Marsteller, since the agency has basically hired his entire PR staff.

The latest departure is Erin Garvey, Newsom’s deputy press secretary, who just joined Burson’s San Francisco office as manager in the issues and crisis group.

She reunites with Newsom’s former communication’s director, Nathan Ballard, who joined Burson this past March. Brian Purchia left his post as Newsom’s deputy communications director and tech advisor to join Burson in April.

Brian Purchia has left his post as Deputy Communications Director and Tech Advisor for San Francisco Mayor Gavin Newsom to join Burson Marsteller’s digital arm, Proof Integrated Communications.

Newsom’s former communications director, Nathan Ballard, joined Burson to run their San Francisco office just a few weeks ago.

“Brian’s done genuinely innovative work and helped open up San Francisco government,” Craigslist founder Craig Newmark told the San Francisco Chronicle today.

In addition, Michael Beno has also joined Proof as a director. He was most recently with Ruder Finn. Proof hired B.L. Ochman as its managing director in January.

For those keeping score at home, so far this year B-M has hired a new digital employee once every ten days.