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Incumbent Paul Cook (R) defeated Tim Donnelly (R) in the 2018 general election for California's 8th Congressional District.
Cook was first elected to represent the district in 2012 and was last re-elected in 2016 by a margin of 25 percentage points, facing a Democratic opponent. The 2018 general election was Cook's first general election against a Republican opponent and the only U.S. House election in 2018 to feature two Republican candidates in the general election.
Cook was endorsed by President Donald Trump (R), the National Border Patrol Council, and the National Rifle Association. Donnelly, a former Minuteman leader, was endorsed by Sen. Rand Paul (R) and Turning Point USA founder Charlie Kirk.
All 435 seats in the U.S. House of Representatives were up for election in 2018. Heading into the election, the Republican Party was in the majority holding 235 seats to Democrats' 193 seats, with seven vacant seats. Democrats needed to win 23 GOP-held seats in 2018 to win control of the House. From 1918 to 2016, the president’s party lost an average of 29 seats in midterm elections.
If you are aware of polls conducted in this race, please email us.
The chart below contains data from financial reports submitted to the Federal Election Commission.
| Name | Party | Receipts* | Disbursements** | Cash on hand | Date |
|---|---|---|---|---|---|
| Paul Cook | Republican Party | $978,469 | $1,409,426 | $140,257 | As of December 31, 2018 |
| Tim Donnelly | Republican Party | $276,438 | $275,611 | $827 | As of December 31, 2018 |
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Source: Federal Elections Commission, "Campaign finance data," 2018.
* According to the FEC, "Receipts are anything of value (money, goods, services or property) received by a political committee." |
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This section provides an overview of federal and state elections in California from 2000 to 2016. All data comes from the California Secretary of State.
This chart shows the results of the presidential election in California every year from 2000 to 2016.
Election results (President of the United States), California 2000-2016
| Year | First-place candidate | First-place candidate votes (%) | Second-place candidate | Second-place candidate votes (%) | Margin of victory (%) |
|---|---|---|---|---|---|
| 2016 |  Hillary Clinton |
61.7% |  Donald Trump |
31.6% | 30.1% |
| 2012 | Barack Obama |
60.2% | Mitt Romney |
37.1% | 23.1% |
| 2008 | Barack Obama |
61.1% | John McCain |
37% | 24.1% |
| 2004 | John Kerry |
54.4% | George W. Bush |
44.4% | 10% |
| 2000 | Al Gore |
53.5% | George W. Bush |
41.7% | 11.8% |
This chart shows the results of U.S. Senate races in California from 2000 to 2016. Every state has two Senate seats, and each seat goes up for election every six years. The terms of the seats are staggered so that roughly one-third of the seats are up every two years.
Election results (U.S. Senator), California 2000-2016
| Year | First-place candidate | First-place candidate votes (%) | Second-place candidate | Second-place candidate votes (%) | Margin of victory (%) |
|---|---|---|---|---|---|
| 2016 | Kamala Harris |
61.6% | Loretta Sanchez |
38.4% | 23.2% |
| 2012 | Dianne Feinstein |
62.5% | Elizabeth Emken |
37.5% | 25% |
| 2010 | Barbara Boxer |
52.2% | Carly Fiorina |
42.2% | 10% |
| 2006 | Dianne Feinstein |
59.5% | Richard Mountjoy |
35.1% | 24.4% |
| 2004 | Barbara Boxer |
57.8% | Bill Jones |
37.8% | 20% |
| 2000 | Dianne Feinstein |
55.9% | Tom Campbell |
36.6% | 19.3% |
This chart shows the results of the four gubernatorial elections held between 2000 and 2016. Gubernatorial elections are held every four years in California.
Election results (Governor), California 2000-2016
| Year | First-place candidate | First-place candidate votes (%) | Second-place candidate | Second-place candidate votes (%) | Margin of victory (%) |
|---|---|---|---|---|---|
| 2014 | Jerry Brown |
60% | Neel Kashkari |
40% | 20% |
| 2010 | Jerry Brown |
53.8% | Meg Whitman |
40.9% | 12.9% |
| 2006 | Arnold Schwarzenegger |
55.9% | Phil Angelides |
39.0% | 16.9% |
| 2002 | Gray Davis |
47.3% | Bill Simon |
42.4% | 4.9% |
This chart shows the number of Democrats and Republicans who were elected to represent California in the U.S. House from 2000 to 2016. Elections for U.S. House seats are held every two years.
Congressional delegation, California 2000-2016
| Year | Democrats | Democrats (%) | Republicans | Republicans (%) | Balance of power |
|---|---|---|---|---|---|
| 2016 | 39 |
73.5% | 14 |
26.4% | D+25 |
| 2014 | 39 |
73.5% | 14 |
26.4% | D+25 |
| 2012 | 38 |
71.7% | 15 |
28.3% | D+23 |
| 2010 | 34 |
64.1% | 19 |
35.8% | D+15 |
| 2008 | 34 |
64.1% | 19 |
35.8% | D+15 |
| 2006 | 34 |
64.1% | 19 |
35.8% | D+15 |
| 2004 | 33 |
62.3% | 20 |
37.7% | D+13 |
| 2002 | 33 |
62.3% | 20 |
37.7% | D+13 |
| 2000 | 32 |
61.5% | 20 |
38.5% | D+12 |
A state government trifecta occurs when one party controls both chambers of the state legislature and the governor's office.
California Party Control: 1992-2019
14 years of Democratic trifectas • No Republican trifectas
| Year | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | R | R | R | R | R | R | R | D | D | D | D | D | R | R | R | R | R | R | R | D | D | D | D | D | D | D | D | D |
| Senate | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D |
| Assembly | D | D | D | S | R | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D | D |
Demographic data for California
| California | U.S. | |
|---|---|---|
| Total population: | 38,993,940 | 316,515,021 |
| Land area (sq mi): | 155,779 | 3,531,905 |
| Gender | ||
| Female: | 50.3% | 50.8% |
| Race and ethnicity** | ||
| White: | 61.8% | 73.6% |
| Black/African American: | 5.9% | 12.6% |
| Asian: | 13.7% | 5.1% |
| Native American: | 0.7% | 0.8% |
| Pacific Islander: | 0.4% | 0.2% |
| Two or more: | 4.5% | 3% |
| Hispanic/Latino: | 38.4% | 17.1% |
| Education | ||
| High school graduation rate: | 81.8% | 86.7% |
| College graduation rate: | 31.4% | 29.8% |
| Income | ||
| Median household income: | $61,818 | $53,889 |
| Persons below poverty level: | 18.2% | 11.3% |
| Source: U.S. Census Bureau, "American Community Survey" (5-year estimates 2010-2015) for more information on the 2020 census and here for more on its impact on the redistricting process in California. | ||
As of July 2016, California had a population of approximately 39,000,000 people, with its three largest cities being Los Angeles (pop. est. 4.0 million), San Diego (pop. est. 1.4 million), and San Jose (pop. est. 1 million).
