David Roberti Democratic David Roberti Democratic Mayoral elections: Mayoral elections: Mayoral elections: Mayoral elections: Mayoral elections: Mayoral elections: The 1990 California State Senate elections were held on November 6, 1990.

Senate seats of even-numbered districts were up for election.

Senate terms are staggered so that half the membership is elected every two years.

The Democratic party won 15 seats, gaining a seat from the Republicans.

The Republicans won 4 seats, and Independent Quentin L. Kopp was reelected.