Election Results: Incumbents Pull Ahead, Barbanica Has Supervisor Lead

WALNUT CREEK, CA —Votes have been cast in Tuesday's presidential primary election and polls officially closed at 8 p.m. in Walnut Creek and across California.

In Contra Costa County's final election night tally released at 11:33 p.m. Tuesday, Walnut Creeks's incumbent representatives — Tim Grayson, Mark DeSaulnier and Rebecca Bauer Kahan — all had comfortable leads against their competitors.

In the race for the Contra Costa County Board of Supervisors, Candace Anderson ran unopposed for District 1 and Diane Burgis ran unopposed for District 3. In the race for District 5, Mike Barbanica was ahead of four other candidates for longtime Supervisor Federal Glover's seat.

Here are the real-time Contra Costa County election results.

The Registrar of Voters will update these results throughout the night as votes are tallied, and the page will be refreshed with the latest counts.

Can't see the results below? Click here for all March 5, 2024 Primary Contra Costa County election results.

Real-time results are below. Scroll to select the race of your choice.

March 5 Primary

With presidential frontrunners former President Donald Trump and President Joe Biden expected to win their nominations handily, all eyes in California are on the hotly contested primary race for the seat vacated by the late Sen. Dianne Feinstein as well as a slew of local races.

In Walnut Creek and Contra Costa County, voters decided on xx candidate races and xx ballot measure/s.

Ballot Question:

• California Prop 1: Authorizes $6.5 billion in bonds to build mental health and substance abuse treatment facilities and homeless housing. YES: 51.1 percent; NO: 48.9 percent (Statewide results as of 11:56 p.m. Tuesday.)

U.S. House District 10:

• Mark DeSaulnier (D) 65.02 percent
• Nolan Chen (R) 10.69 percent
• Mohamed Elsherbini (NP) .81 percent
• Katherine Piccinini (R) 19.78 percent
• Joe Sweeney (NP)3.65 percent

California State Senate District 9:

• Tim Grayson (D) 63.95 percent
• Marisol Rubio (D) 34.68 percent
• Joseph Grcar (R) write-in
• David Minor (R) write-in

California State Assembly District 16

• Rebecca Bauer-Kahan (D) 65.89 percent
• Joseph Rubay (R) 34.27 percent

Contra Costa County Board Of Supervisors (nonpartisan)

• District 2 candidates: Candace Andersen
• District 3 candidates: Diane Burgis
• District 5 candidate: Mike Barbanica 41.17 percent; Iztacchuauhtli Hector Gonzalez 11.04 percent, Jelani Killings 14.35 percent, Shanelle Scales-Preston 33.25 percent

Contra Costa County Superior Court Judge (nonpartisan)

Twelve candidates are running uncontested to retain their respective seats:

• Ayana Young, seat H
• Charles Burch, seat GG
• Christopher Bowen, seat LL
• Colleen Gleason, seat I
• Frank Riebli, seat D
• Gina Dashman, seat AA
• Joni Hiramoto, seat EE
• Mary Ann O'Malley, seat
• Palvir Shokers, seat T
• Peter Change, seat O
• Rebecca Hardie, seat BB
• Shara Beltramo, seat FF

See all Contra Costa County election results, released 11:33 p.m. March 5 and embedded below: