| Election Date | State | Title | Outcome |
|---|---|---|---|
| Nov. 2, 2010 | Washington | Initiative Measure 1098: Concerning Establishing a State Income Tax and Reducing Other Taxes | Failed |
| Nov. 5, 2013 | Washington | Advisory Vote No. 7: Concerns Estate Tax on Certain Property Transfers and Increased Rates for Estates Over $4,000,000 | Failed |
| Nov. 7, 2017 | Washington | Engrossed House Bill 2242: Advisory Vote No. 18 | Failed |
| Nov. 5, 2019 | Washington | Substitute House Bill 1652: Advisory Vote No. 22 | Passed |
| Nov. 5, 2019 | Washington | Engrossed Substitute Senate Bill 5998: Advisory Vote No. 29 | Passed |