Bi-partisan lobbying firm Ogilvy Government Relations announced a management shake up that includes the departure of John Baker, John Green and C. Stewart Hall, who are leaving to pursue other interests.

Democrat Gordon Taylor will take over as president of the firm and Republican Drew Maloney will serve as CEO. Wayne Berman and Moses Mercado have been named co-chairs of the lobbying group, which is a part of Ogilvy Public Relations, a unit of global public affairs firm WPP.

Baker, Berman, Green, Hall and Maloney were all part of the Federalist Group, an all GOP lobbying firm they founded and sold to Ogilvy Public Relations in 2005. The buy-out from the merger will be completed by the end of this year, which is why some of the former Federalist Group partners decided to head their own way.

"Everyone's happy," said Maloney. "It's been a great ride with the whole team together but over time people want to do other things."

Meanwhile Berman considered leaving too. He had two other offers to leave the lobbying business from insurance firms--an industry that he's long lobbied for and had close ties with--but opted to remain at Ogilvy.

(Photo above of Taylor, the new president of Ogilvy. Photo from Ogilvy website)