The North Coast's two congressional districts were dramatically altered in maps approved Friday by the California Citizens Redistricting Commission, putting Santa Rosa, Rohnert Park and Cotati in an inland district that includes Democratic Rep. Mike Thompson's hometown of St. Helena.
Most of the rest of Sonoma County is in a coastal district stretching from the Golden Gate Bridge to the Oregon border, obliterating the compact Sonoma-Marin district held by retiring Rep. Lynn Woolsey, D-Petaluma.
Thompson's base in Napa County is cut off from the North Coast, which he has represented in Congress since 1999 and for eight years before that in the state Senate.
The 14-member commission intends to certify the maps without changes Aug. 15.
"We have created a new landscape," Chairwoman Connie Galambos Malloy said. The new districts were drawn without regard to voter registration patterns or candidates' addresses, she said.