Woolsey has represented Marin and Sonoma counties for almost 20 years.
She announced a news conference for next Monday at her home in Petaluma. Her office will only say it is about her future plans, but The Press Democrat says sources indicate she will leave office at the end of her term in 2012.
Incidentally, the first draft of a redistricting map that will determine the state's new congressional boundaries showed Woolsey could lose her seat.
