Candidates can begin filing for the state Senate seat vacated by Doug LaMalfa, now that Gov. Jerry Brown has set the primary election for Nov. 6 and, if necessary, a runoff for Jan 8.
Contenders can file for the 4th District Senate election through Tuesday, Sept. 12, the secretary of state's office said.
Incumbent Republican Assembly members Jim Nielsen of Gerber and Dan Logue of Marysville already have announced that they will butt heads to fill the final two years of LaMalfa's Senate term in the heavily Republican district.
Gov. Jerry Brown issued a proclamation Wednesday designating the two dates for balloting in the 4th Senate District, which winds through Yuba, Butte, Colusa, Glenn, Sutter, Tehama, Trinity, Del Norte, Nevada, Placer, Shasta and Siskiyou counties.
To win LaMalfa's Senate seat outright in the Nov. 6 primary, a candidate must receive more than 50 percent of votes cast. Brown scheduled the 4th District primary in conjunction with California's statewide presidential election.
LaMalfa, R-Richvale, resigned from the Legislature to run for the congressional seat of Republican Wally Herger in a district that tilts strongly to the right.