California's 45th congressional district


California's 45th congressional district is a congressional district in the U.S. state of California.
The district is based in Orange County and includes all of Irvine, Tustin, North Tustin, Villa Park, Laguna Hills, Lake Forest, and Rancho Santa Margarita, as well as parts of Anaheim, Orange, Laguna Woods, Mission Viejo, and Laguna Niguel.
Katie Porter, a Democrat, has represented the district since January 2019. In November 2018, Porter defeated Republican incumbent Mimi Walters in the general election and became the first Democrat to win a House race in the district since its inception.

Competitiveness

2018 Midterm Elections

Incumbent Walters competed against a field of four Democrats and an independent candidate in the primary election for the 2018 midterm elections. On February 25, 2018, UC Irvine assistant law professor Dave Min received the endorsement of the California Democratic Party.
Min, former White House senior technology advisor Brian Forde, former legislative assistant to Sherrod Brown Kia Hamadanchy, UCI law professor Katie Porter, and UCI business professor John Graham ran in the "top two" primary in June 2018. Walters and Porter placed first and second and advanced to the general election in November.
On November 14, 2018, 8 days after polls closed, David Wasserman, the House Editor for The Cook Political Report, projected that Porter had won the general election. Porter is the first Democrat to win a US congressional race in California's 45th congressional district since its creation following the 1980 census.

In statewide races

List of members representing the district

District created January 3, 1983.
MemberPartyDatesCong
ress
Electoral historyCounties

Duncan Hunter
RepublicanJanuary 3, 1983 –
January 3, 1993
Redistricted from the and re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Redistricted to the.
1983–1993
Imperial, San Diego

Dana Rohrabacher
RepublicanJanuary 3, 1993 –
January 3, 2003
Redistricted from the and re-elected in 1992.
Re-elected in 1994.
Re-elected in 1996.
Re-elected in 1998.
Re-elected in 2000.
Redistricted to the.
1993–2003
Orange

Mary Bono
RepublicanJanuary 3, 2003 –
January 3, 2013
Redistricted from the and re-elected in 2002.
Re-elected in 2004.
Re-elected in 2006.
Re-elected in 2008.
Re-elected in 2010.
Redistricted to the and lost re-election.
2003–2013
Riverside

John Campbell
RepublicanJanuary 3, 2013 –
January 3, 2015
Redistricted from the and re-elected in 2012.
Retired.
2013–Present
Orange

Mimi Walters
RepublicanJanuary 3, 2015 –
January 3, 2019
Elected in 2014.
Re-elected in 2016.
Lost re-election.
2013–Present
Orange

Katie Porter
DemocraticJanuary 3, 2019 –
Present
Elected in 2018.2013–Present
Orange

Election results

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

2004

2006

2008

2010

2012

2014

2016

2018

Historical district boundaries

From 2003 to 2013, this district was based in Riverside County. The district included the communities of Palm Springs, Moreno Valley, Palm Desert, Hemet, Cathedral City, Temecula, Blythe, Rancho Mirage, Murrieta, Indio, Indian Wells, La Quinta, Cabazon, Anza, Thermal, Idyllwild, Coachella, and other unincorporated areas of Riverside County.