The 2006 United States Senate election in California was held November 7, 2006. Incumbent Democratic U.S. Senator Dianne Feinstein won re-election to her third full term.
Feinstein stood against Republican Dick Mountjoy, who had never held a statewide elected position, but had been a state senator for several years. Also running was Libertarian Michael Metti, Don Grundmann of the American Independent Party, Todd Chretien of the Green Party and Marsha Feinland of the Peace and Freedom Party.
Because California is a state that requires a large amount of money to wage a competitive statewide campaign, it is not unusual - as was the case for this race - for a popular incumbent to have no significant opponent. Several prominent Republicans, such as Bill Jones, Matt Fong, and others, declined to run, and a previously announced challenger, businessman Bill Mundell, withdrew his declaration after determining he would not be a self-funded candidate (as Michael Huffington was in the 1994 election). As of 2024, this is the most recent U.S. Senate election in California where both major party nominees have since died.[1][2][3]
^Karni, Annie (September 29, 2023). "Senator Dianne Feinstein Dies at 90". The New York Times. ISSN 0362-4331. Retrieved September 29, 2023.
^"U.S. Senate: Senators Who Have Died in Office". www.senate.gov. Retrieved September 29, 2023.
^Los Angeles Times (May 19, 2015). "Richard Mountjoy, GOP legislator and key Prop. 187 backer, dies at 83". Los Angeles Times.
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