1972Final results
1972 election for Washington Legislative District 40
Washington State Senate · Washington
Lowell Peterson (D) won with 60.2% of the vote, defeating Jim Costanti (R) by 20.3 points.
Lowell PetersonDemocrat · winner · incumbent
60.2%19,598
Jim CostantiRepublican
39.8%12,975
32,573 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1972
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET