Petaluma City Councilwoman Tiffany Renee has formed an exploratory committee to run for Lynn Woolsey's congressional seat after the longtime lawmaker retires next year.

Renee said she is raising funds and exploring a run for the 6th Congressional District seat, "pending redistricting."

Assemblyman Jared Huffman, D-San Rafael; Norman Solomon, a prominent Marin County activist and author; and Marin County Supervisor Susan Adams also have formed campaign committees to run for Woolsey's seat.

The district's boundaries are currently being redrawn as part of a redistricting process. Two drafts of revised district maps showed far different configurations for both Woolsey's district and the 1st District seat held by Rep. Mike Thompson, D-St. Helena.

The latest map would dramatically change Woolsey's district, removing from it southern Sonoma County and Marin County but extending it north and east to pick up Lake and Napa counties. The final draft is due July 28.

Woolsey, D-Petaluma, announced recently that she will retire when her current term is up in 2012.

"I am raising funds and engaging in dialogue that may lead to a congressional run," Renee said in a statement announcing her intention.

"If redistricting includes the North Bay communities I've been working for these past 20 years, then I intend to carry on my fight for those communities. I see it as the same fight Representative Woolsey has taken on for 10 terms as a fellow woman, Petaluma neighbor and former councilmember. I helped her first get elected, fought for her when her seat was challenged and I want to help continue her work now."

Renee, 39 and a Democrat, was elected to the Petaluma council in 2008. She runs her own website design firm.