2010Final results
2010 election for Washington Legislative District 21
Washington State Senate · Washington
Paull H. Shin (D) won with 63.3% of the vote, defeating David Preston (R) by 26.5 points.
Paull H. ShinDemocrat · winner · incumbent
63.3%30,369
David PrestonRepublican
36.7%17,637
48,006 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 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET