# Oregon's 16th Senate district

District 16 of the Oregon State Senate comprises all of Clatsop, Columbia, and Tillamook counties as well as western portions of Multnomah and Washington counties and a small sliver of northern Yamhill County. It consists of Oregon House districts 31 and 32. It is currently represented by Republican Suzanne Weber.

## Election results

District boundaries have changed over time. Therefore, senators before 2013 may not represent the same constituency as today. From 1993 until 2003, the district covered parts of the Salem metropolitan area; from 2003 until 2013, it shifted to cover northwest Oregon, including all of Clatsop, Columbia, and Tillamook counties, western Washington County, and northwestern Multnomah County; and from 2013 until 2023, it lost the southern half of Tillamook County while gaining parts of Bethany.
The current district is very similar to the previous iteration, losing parts of northwest Portland south of Sauvie Island and all of Bethany while gaining North Plains and a small sliver of Yamhill County near Gaston and regaining all of Tillamook County.
The results are as follows:
| Year | Candidate | Party | Percent | Opponent | Party | Percent | Opponent | Party | Percent | Opponent | Party | Percent |
| 1982 | L. B. Day | Republican | 51.9% | Jack Sumner | Democratic | 48.1% | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |
| 1986 | Jim Hill | Democratic | 73.6% | Frank Day | Republican | 26.4% | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |
| 1990 | Jim Hill | Democratic | 61.6% | Terry Kay | Republican | 38.4% | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |
| 1994 | Gene Derfler | Republican | 68.0% | Mike Montgomery | Democratic | 32.0% | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |
| 1998 | Gene Derfler | Republican | 58.5% | Lloyd Kumley | Democratic | 39.0% | Della Smith | Socialist | 2.1% | No fourth candidate | No fourth candidate | No fourth candidate |
| 2002 | Joan Dukes | Democratic | 56.4% | Don Fell | Republican | 38.3% | Helen McDaniel | Libertarian | 5.3% | No fourth candidate | No fourth candidate | No fourth candidate |
| 2006 | Betsy Johnson | Democratic | 63.6% | Don Fell | Republican | 33.3% | Robert J. Simmering | Constitution | 3.0% | No fourth candidate | No fourth candidate | No fourth candidate |
| 2010 | Betsy Johnson | Democratic | 54.4% | Bob Horning | Republican | 45.3% | No third candidate | No third candidate | No third candidate | | | No fourth candidate | No fourth candidate | No fourth candidate |
| 2014 | Betsy Johnson | Democratic | 70.0% | Andrew Kaza | Independent | 13.5% | Bob Ekstrom | Constitution | 12.2% | Perry Roll | Libertarian | 3.9% |
| 2018 | Betsy Johnson | Democratic | 82.0% | Ray Biggs | Constitution | 17.3% | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |
| 2022 | Suzanne Weber | Republican | 56.5 | Melissa Busch | Democratic | 43.4 | No third candidate | No third candidate | No third candidate | No fourth candidate | No fourth candidate | No fourth candidate |