Special election candidates: Joan Buchanan,
Mark Meuser and Susan Bonilla.

STATE SENATE DISTRICT 7 | When Mark DeSaulnier was elected to replace long-time Congressman George Miller last year, it created an opening for his State Senate 7th District seat.

Gov. Jerry Brown on Tuesday announced the SD-7 top-two primary will be scheduled for for Mar. 17. The special election will follow on May 19.

Former Assemblymember Joan Buchanan and current Assemblymember Susan Bonilla, both Democrats, are seen as the leading contenders. Republican Mark Meuser, an attorney, has also announced plans to run for the seat.

Special elections in SD21 and SD37 will also occur the same day, Brown announced.

The 7th District encompasses large parts of Contra Costa County, including Orinda Concord and Pittsburg along with the most of the Tri Valley in Alameda County.

The Tri-Valley Democratic Club will host Buchanan and Bonilla for a candidates forum, Jan. 19, 8 p.m. at the IBEW Hall in Dublin at 6250 Village Parkway.