Map showing California’s 8th Congressional District, to go into effect Jan. 3, 2027. Photo courtesy of California State Senate Office of Demographics

DIXON, CA (MPG) - For the fourth time in a little more than 20 years, Dixon will be shifting congressional districts.

California’s new congressional redistricting map, approved under Proposition 50 last year, takes effect upon the seating of the 120th Congress. 

Dixon residents, currently part of the 4th Congressional District, will become part of California’s 8th District at 12 p.m. on Jan. 3, 2027. In anticipation of the change, voters will cast ballots for the redrawn district on Nov. 3. 

John Garamendi (D-Walnut Grove), who represented Dixon as a U.S. representative serving the 3rd District from 2013 through 2023, is running against Republican Rudy Recile in the 8th District race.

Garamendi, 81, first elected to Congress in 2009 and currently representing the 8th District, has served in politics for more than 50 years. He was California’s lieutenant governor from 2007 to 2008.

Recile is a retired U.S. Army officer and holds a master’s degree in quality systems management. He has worked for the U.S. Department of Agriculture and now runs a small website-development company headquartered in Vacaville.

The 8th District dates back to 1903, when it was created to serve Imperial, Inyo, Kern, Orange, Riverside, San Bernardino, San Diego, San Luis Obispo, Santa Barbara, Tulare and Ventura counties.

For the past few years, Dixon has been part of California’s 4th Congressional District. Under the 2020 redistricting, California’s 4th District encompasses Lake, Napa and Yolo counties, and parts of Sonoma and Solano counties. Rep. Mike Thompson, who has been in Congress for more than 25 years, has represented the district since 2023.

From 2013 through 2023, Dixon was a part of the 3rd District, which stretched from Suisun Bay to Glenn County and included Fairfield, Davis and Yuba City. Garamendi represented the district during the entire 10-year period.

From 2003 until 2013, Dixon was part of the 10th District. That consisted of portions of Alameda, Contra Costa and Sacramento counties, in addition to part of Solano.

Prop. 50, a congressional districting gerrymander designed to help Democrats gain five U.S. House seats in response to a pro-Republican gerrymander in Texas, was approved by voters at the Nov. 4, 2025, special election. 

Under Prop. 50, California will temporarily use legislatively drawn Congressional district maps starting in 2026 and through 2030. These district maps will be used until the state redistricting commission draws new maps following the 2030 U.S. Census. 

Prop. 50 did not alter current State Senate, State Assembly or State Board of Equalization district lines, according to information found on the California Secretary of State’s website. 

Those district lines, drawn by the California Citizens Redistricting Commission after the 2020 Census, remain in effect.