Editing Johnson County, Kansas (section)

===Federal representation===
{{Hidden
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|header     = Presidential election results
|content    =
{{PresHead|place=Johnson County, Kansas|source=<!-- <ref>{{cite web|url=http://uselectionatlas.org/RESULTS|title=Dave Leip's Atlas of U.S. Presidential Elections|first=David|last=Leip|website=uselectionatlas.org}}</ref> -->}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|2024|Democratic|154,247|183,451|9,162|Kansas}}
{{PresRow|2020|Democratic|155,631|184,259|9,496|Kansas}}
{{PresRow|2016|Republican|137,490|129,852|26,866|Kansas}}
{{PresRow|2012|Republican|158,401|110,526|6,147|Kansas}}
{{PresRow|2008|Republican|152,627|127,091|4,493|Kansas}}
{{PresRow|2004|Republican|158,103|97,866|2,718|Kansas}}
{{PresRow|2000|Republican|129,965|79,118|8,453|Kansas}}
{{PresRow|1996|Republican|110,368|68,129|12,397|Kansas}}
{{PresRow|1992|Republican|85,418|59,573|49,875|Kansas}}
{{PresRow|1988|Republican|95,591|55,183|1,425|Kansas}}
{{PresRow|1984|Republican|101,987|38,019|876|Kansas}}
{{PresRow|1980|Republican|78,048|33,210|12,725|Kansas}}
{{PresRow|1976|Republican|75,798|35,605|2,739|Kansas}}
{{PresRow|1972|Republican|76,161|24,324|2,242|Kansas}}
{{PresRow|1968|Republican|55,060|26,034|6,818|Kansas}}
{{PresRow|1964|Republican|37,672|31,213|294|Kansas}}
{{PresRow|1960|Republican|43,026|21,914|93|Kansas}}
{{PresRow|1956|Republican|35,511|14,185|37|Kansas}}
{{PresRow|1952|Republican|29,103|10,990|70|Kansas}}
{{PresRow|1948|Republican|14,191|8,982|205|Kansas}}
{{PresRow|1944|Republican|11,951|5,771|51|Kansas}}
{{PresRow|1940|Republican|10,326|5,770|46|Kansas}}
{{PresRow|1936|Republican|8,399|6,108|47|Kansas}}
{{PresRow|1932|Republican|6,487|6,485|124|Kansas}}
{{PresRow|1928|Republican|8,185|3,373|69|Kansas}}
{{PresRow|1924|Republican|6,102|2,519|603|Kansas}}
{{PresRow|1920|Republican|4,325|2,303|101|Kansas}}
{{PresRow|1916|Democratic|3,767|3,928|205|Kansas}}
{{PresRow|1912|Democratic|834|1,837|1,719|Kansas}}
{{PresRow|1908|Republican|2,313|2,091|116|Kansas}}
{{PresRow|1904|Republican|2,573|1,373|267|Kansas}}
{{PresRow|1900|Republican|2,393|2,171|75|Kansas}}
{{PresRow|1896|Democratic|2,313|2,462|62|Kansas}}
{{PresRow|1892|Republican|2,070|0|2,031|Kansas}}
{{PresRow|1888|Republican|2,164|1,435|474|Kansas}}
{{PresRow|1884|Republican|2,110|1,392|489|Kansas}}
{{PresFoot|1880|Republican|2,132|1,180|360|Kansas}}
}}<!-- End of Hidden template -->

Johnson County is entirely located within [[Kansas's 3rd congressional district]], which has been represented by Democrat [[Sharice Davids]] since 2019. The two U.S. Senators from Kansas are Republicans [[Roger Marshall]] and [[Jerry Moran]].

Johnson County was historically a Republican stronghold. It was won by the GOP in every presidential election from [[1920 United States presidential election in Kansas|1920]] to [[2016 United States presidential election in Kansas|2016]], including Barry Goldwater’s [[1964 United States presidential election in Kansas|1964 election]] victory despite his statewide loss. The county was one of the few to reject [[Franklin Roosevelt]] in all four of his successful campaigns, with his closest margin coming in 1932, where he lost by just two votes.<!-- <ref>{{cite web|url=http://uselectionatlas.org/ |title=Presidential Election Results by County 1960–Present |publisher=Uselectionatlas.org |date=January 24, 1999 |access-date=April 14, 2012}}</ref> --><ref>{{cite web|url=http://geoelections.free.fr/USA/accueil.htm |title=Presidential Election Results by County Pre 1960 |publisher=Geoelections.free.fr |access-date=April 14, 2012}}</ref> However, the margin narrowed considerably in the early 2000s. In 2008, [[Barack Obama]] became the first Democrat since [[Lyndon Johnson]] to win as much as 40 percent of the county's vote. In [[2016 United States presidential election in Kansas|2016]], Republican [[Donald Trump]] won the county by less than three points, as the GOP’s shift toward [[right-wing populism]] alienated moderate voters. In [[2020 United States presidential election in Kansas|2020]], [[Joe Biden]] became the first Democrat to win the county since [[Woodrow Wilson]] in 1916, securing an 8% margin and the highest share of the vote ever for a Democrat there. In [[2024 United States presidential election in Kansas|2024]], [[Kamala Harris]] not only carried the county but achieved the highest Democratic vote share in its history, becoming the first Democrat to lose a presidential election while carrying Johnson County since [[1896 United States presidential election in Kansas|1896]].

This leftward shift was mirrored in the state’s Senate races, where Democrats won Johnson County in [[2020 United States Senate election in Kansas|2020]] and [[2022 United States Senate election in Kansas|2022]], despite losing statewide. Once a classic suburban Republican bastion, the county now leans Democratic at the national level, reflecting broader trends in Kansas’s suburban areas.

On November 8, 2020, Democrats made historic gains in Johnson County, securing a majority on the Board of Commissioners for the first time in the county’s history. In both the 2022 and 2024 elections, Democrats expanded their majority on the Board and flipped the Sheriff’s office for the first time in 96 years.<ref>{{cite news |last=Kraske |first=Steve |date=13 November 2024|title=Byron Roberson will be the first Black sheriff in Johnson County history |url=https://www.kcur.org/podcast/up-to-date/2024-11-13/byron-roberson-will-be-the-first-black-sheriff-in-johnson-county-history |work=KCUR 89.3 |location= |access-date=}}</ref><ref>{{Cite web |url=https://www.jocoelection.org/sites/default/files/2022-05/november_3_2020_general_election_-_official_final_results.pdf? |title=Official Final Results |date=12 November 2020 |website=jocoelection.org |access-date= 27 December 2024}}</ref>