| Year | Senator 1 | Senator 2 | Race | Notes |
|---|---|---|---|---|
| 2000 | 2000 US Senate | |||
| 2001 | Diane Feinstein | |||
| 2002 | ||||
| 2003 | ||||
| 2004 | 2004 US Senate | |||
| 2005 | Barbara Boxer | |||
| 2006 | 2006 US Senate | |||
| 2007 | Diane Feinstein | |||
| 2008 | ||||
| 2008 | ||||
| 2010 | 2010 US Senate | |||
| 2011 | Barbara Boxer | |||
| 2012 | 2012 US Senate | |||
| 2013 | Diane Feinstein | |||
| 2014 | ||||
| 2015 | ||||
| 2016 | 2016 US Senate | |||
| 2017 | Kamala Harris | |||
| 2018 | 2018 US Senate | |||
| 2019 | Diane Feinstein | |||
| 2020 |