Incumbent Democrat Sam Liccardo secured approximately 70 percent of the vote in the June 2 top-two primary for California's 16th congressional district, far ahead of Republican challengers Peter Sundin Soulé and Kevin Johnson. Under the state's jungle primary rules, the top two finishers advance to the November general election regardless of party. Early returns and candidate filings indicate Liccardo faces minimal primary opposition in a district where Democrats hold structural advantages, while the Republican contenders split the remaining support. No major late developments altered the outcome before polls closed, and market pricing aligns with these certified vote patterns and historical incumbency performance in similar California races.