The primary elections took place on June 3, 1998.

The Democratic nominee, Bill Lockyer, defeated the Republican nominee, Dave Stirling, for the office previously held by incumbent Dan Lungren, who chose not to seek re-election in favor of running for governor.

Final results from the Secretary of State of California.

[1] Final results from the Secretary of State of California.

[2] Results from the Secretary of State of California:[2]