Editing St. Charles County, Missouri (section)

==Politics==

===Local===
The [[Republican Party (United States)|Republican Party]] predominantly controls politics at the local level in St. Charles County. Republicans hold all the elected positions in the county.<ref>{{Cite web|title=November 2018 General Election|url=https://www.livevoterturnout.com/stcharlesmo/LiveResults/en/Index_10.html}}</ref><ref>{{Cite web|title=November 3, 2020 General Election|url=https://www.livevoterturnout.com/stcharlesmo/LiveResults/en/Index_17.html}}</ref><ref>{{Cite web|title=County Council|url=https://www.sccmo.org/286/County-Council|website=St. Charles County, Missouri|access-date=March 9, 2022}}</ref>

{| class=wikitable
|-
! Position !! Incumbent !! Party
|-
| {{Party shading/Republican}} | Assessor
| {{Party shading/Republican}} | Travis Welge<ref>{{cite web |url=https://www.sccmo.org/151/Assessor |title=Assessor |website=St. Charles County, Missouri |access-date=May 15, 2024}}</ref>
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Collector
| {{Party shading/Republican}} | Michelle McBride
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 1
| {{Party shading/Republican}} | Matt Swanson
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 2
| {{Party shading/Republican}} | Joseph Brazil
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 3
| {{Party shading/Republican}} | Michael Elam
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 4
| {{Party shading/Republican}} | David Hammond
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 5
| {{Party shading/Republican}} | Terry Hollander
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 6
| {{Party shading/Republican}} | Nancy Schneider
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Council Member&nbsp;– District 7
| {{Party shading/Republican}} | Tim Baker
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | County Executive
| {{Party shading/Republican}} | [[Steve Ehlmann]]
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Director of Elections
| {{Party shading/Republican}} | [[Kurt Bahr]]
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Prosecuting Attorney
| {{Party shading/Republican}} | Joe McCulloch
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]<ref>{{cite news |url=http://www.stltoday.com/suburban-journals/stcharles/news/st-charles-county-judge-nominated-for-prosecutor/article_d59aba5b-5716-5206-b4e1-16af57d8884d.html |title=St. Charles County judge nominated for prosecutor |first=Russell |last=Korando |newspaper=St. Charles County Suburban Journal |date=November 23, 2012 |access-date=December 3, 2013 |quote=Ehlmann was required to appoint someone from the same political party as Banas, a Republican, to serve until the office comes up for election in November 2014. }}</ref><ref>{{cite web |url=https://sccmo.org/414/Prosecuting-Attorney |title=Prosecuting Attorney |website=St. Charles County |access-date=August 18, 2024}}</ref>
|-
| {{Party shading/Republican}} | Recorder
| {{Party shading/Republican}} | Mary Dempsey
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
| {{Party shading/Republican}} | Sheriff
| {{Party shading/Republican}} | Scott Lewis
| {{Party shading/Republican}} | [[Republican Party (United States)|Republican]]
|-
|}

===State===
{| class="wikitable" style="float:right; font-size:95%;"
|+ Past Gubernatorial Elections Results
|- bgcolor=lightgrey
! Year
! [[Republican Party (United States)|Republican]]
! [[Democratic Party (United States)|Democratic]]
! [[Third Party (United States)|Third Parties]]
|-
|align="center" bgcolor="#fff3f3 "|[[2024 Missouri gubernatorial election|2024]]
|align="center" bgcolor="#fff3f3"|'''59.51%''' ''132,563''
|align="center" bgcolor="f0f0ff"|38.44% ''85,628''
|align="center" |2.05% ''4,561''
|-
|align="center" bgcolor="#fff3f3 "|[[Missouri gubernatorial election, 2020|2020]]
|align="center" bgcolor="#fff3f3"|'''58.12%''' ''128,230''
|align="center" bgcolor="f0f0ff"|39.84% ''87,888''
|align="center" |2.04% ''4,496''
|-
|align="center" bgcolor="#fff3f3 "|[[Missouri gubernatorial election, 2016|2016]]
|align="center" bgcolor="#fff3f3"|'''54.52%''' ''103,946''
|align="center" bgcolor="#f0f0ff"|42.58% ''85,704''
|align="center" |2.90% ''5,836''
|-
|align="center" bgcolor="#f0f0ff "|[[Missouri gubernatorial election, 2012|2012]]
|align="center" bgcolor="#fff3f3"|48.58% ''89,144''
|align="center" bgcolor="#f0f0ff"|'''48.97%''' ''89,860''
|align="center" |2.45% ''4,486''
|-
|align="center" bgcolor="#f0f0ff "|[[Missouri gubernatorial election, 2008|2008]]
|align="center" bgcolor="#fff3f3"|44.51% ''82,440''
|align="center" bgcolor="#f0f0ff"|'''53.84%''' ''99,705''
|align="center" |1.65% ''3,058''
|-
|align="center" bgcolor="#fff3f3"|[[Missouri gubernatorial election, 2004|2004]]
|align="center" bgcolor="#fff3f3"|'''55.90%''' ''91,323''
|align="center" bgcolor="#f0f0ff"|42.96% ''70,184''
|align="center" |1.14% ''1,865''
|-
|align="center" bgcolor="#f0f0ff"|[[Missouri gubernatorial election, 2000|2000]]
|align="center" bgcolor="#fff3f3"|'''58.24%''' ''74,357''
|align="center" bgcolor="#f0f0ff"|39.49% ''50,415''
|align="center" |2.27% ''2,907''
|-
|align="center" bgcolor="#f0f0ff"|[[Missouri gubernatorial election, 1996|1996]]
|align="center" bgcolor="#fff3f3"|'''49.48%''' ''47,886''
|align="center" bgcolor="#f0f0ff"|48.01% ''46,462''
|align="center" |2.50% ''2,424''
|}

St. Charles County is divided among eleven legislative districts in the [[Missouri House of Representatives|Missouri State House of Representatives]], all of which are held by Republicans.

*District 63&nbsp;– Tricia Byrnes (R-[[Wentzville, Missouri|Wentzville]], since 2023). Consists of most of Wentzville.
*District 64&nbsp;– [[Tony Lovasco]] (R-[[O'Fallon, Missouri|O'Fallon]], since 2019). Consists of Flint Hill, Josephville, St. Paul, and parts of Foristell, O'Fallon, and Wentzville.
*District 65&nbsp;– Wendy Hausman (R-[[St. Peters, Missouri|St. Peters]], since 2023). Consists of West Alton, Portage Des Sioux, and parts of Cottleville, St. Charles, and St. Peters.
*District 69&nbsp;– [[Adam Schnelting]] (R-[[St. Charles, Missouri|St. Charles]], since 2019). Consists of parts of St. Peters and Weldon Spring.
*District 102&nbsp;– [[Richard West (Missouri politician)|Richard West]] (R-[[Wentzville, Missouri|Wentzville]], since 2019). Consists of Augusta, Defiance, New Melle, Weldon Springs Heights, and parts of Cottleville, O'Fallon, St. Peters, and Weldon Spring.
*District 103&nbsp;– Dave Hinman (R-[[O'Fallon, Missouri|O'Fallon]], since 2023). Consists of part of O'Fallon.
*District 104&nbsp;– [[Phil Christofanelli]] (R-[[St. Charles, Missouri|St. Charles]], since 2019). Consists of part of St. Charles and St. Peters.
*District 105&nbsp;– [[Adam Schwadron]] (R-[[St. Charles, Missouri|St. Charles]], since 2021). Consists of part of St. Charles.
*District 106&nbsp;– Travis Wilson (R-[[St. Charles, Missouri|St. Charles]], since 2023). Consists of part of St. Charles.
*District 107&nbsp;– [[Mark Matthiesen]] (R-[[O'Fallon, Missouri|O'Fallon]], since 2023). Consists of parts of Dardenne Prairie and O'Fallon.
*District 108&nbsp;– [[Justin Hicks (politician)|Justin Hicks]] (R-[[Lake St. Louis, Missouri|Lake St. Louis]], since 2023). Consists of Lake St. Louis and parts of Dardenne Prairie and O'Fallon.

St. Charles County is divided into three districts in the [[Missouri Senate|Missouri State Senate]], each of which are represented by Republicans.

*District 2&nbsp;– [[Nick Schroer]] (R-[[Defiance, Missouri|Defiance]], since 2023). Consists of the communities of Augusta, Cottleville, Dardenne Prairie, Defiance, Josephville, Lake St. Louis, New Melle, O'Fallon, St. Paul, Weldon Spring, and Weldon Spring Heights.
*District 10&nbsp;- [[Travis Fitzwater]] (R-[[New Bloomfield, Missouri|New Bloomfield]], since 2023). Consists of the communities of Flint Hill, Foristell, and Wentzville.
*District 23&nbsp;– [[Bill Eigel]] (R-[[Weldon Spring, Missouri|Weldon Spring]], since 2017). Consists of Portage Des Sioux, St. Charles, St. Peters, and West Alton.

===Federal===
Missouri is represented in the [[U.S. Senate]] by [[Josh Hawley]] and [[Eric Schmitt]], whose most recent election results from the county are included here.
{{Election box begin no change|title=U.S. Senate — Missouri — (2022)<ref>{{cite web|title=Official Final Election Results|url= https://www.livevoterturnout.com/ENR/stcharlesmoenr/23/en/Index_23.html|publisher=St. Charles County Election Authority|accessdate= August 19, 2023}}</ref>}}
{{Election box winning candidate with party link no change|
 |party      = Republican Party (United States)
 |candidate  = Eric Schmitt
 |votes      = 83,559
 |percentage = 55.35%
}}
{{Election box candidate with party link no change|
 |party      = Democratic Party (United States)
 |candidate  = Trudy Busch Valentine
 |votes      = 64,552
 |percentage = 42.76%
}}
{{Election box candidate with party link no change|
 |party      = Libertarian Party (United States)
 |candidate  = Jonathan Dine
 |votes      = 2,158
 |percentage = 1.43%
}}
{{Election box candidate with party link no change|
 |party      = Constitution Party (United States)
 |candidate  = Paul Venable
 |votes      = 709
 |percentage = 0.47%
}}
{{Election box total no change|
 |votes      = 150,978
 |percentage = 100.00%
}}
{{Election box end}}
{{Election box begin no change| title=U.S. Senate — Missouri — (2018)<ref name=ENR>{{cite web |title=County Results |url=https://enr.sos.mo.gov/CountyResults.aspx |website=Election Night Reporting |publisher=Missouri Secretary of State |access-date=March 4, 2019 }}</ref>}}
{{Election box candidate with party link no change|
 |party      = Republican Party (United States)
 |candidate  = '''Josh Hawley'''
 |votes      = '''93,172'''
 |percentage = '''52.90%'''
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Democratic Party (United States)
 |candidate  = [[Claire McCaskill]] 
 |votes      = 77,973
 |percentage = 44.30%
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Independent (politician)
 |candidate  = Craig O'Dear
 |votes      = 2,393
 |percentage = 1.40%
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Libertarian Party (United States)
 |candidate  = Japheth Campbell
 |votes      = 1,836
 |percentage = 1.0%
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Green Party of the United States
 |candidate  = Jo Crain
 |votes      = 731
 |percentage = 0.4%
}}
{{Election box total no change
| votes = 176,105
| percentage = 100%
}}
{{Election box end}}
{{Election box begin|title=U.S. Senate — Missouri — (2016)}}
{{Election box candidate with party link|
  |party      = Republican Party (United States)
  |candidate  = '''Roy Blunt''' 
  |votes      = '''103,946'''
  |percentage = '''51.78%'''
  |change     = '''+6.87'''
  }}
{{Election box candidate with party link|
  |party      = Democratic Party (United States)
  |candidate  = Jason Kander
  |votes      = 88,238
  |percentage = 43.95%
  |change     = -5.18
  }}
{{Election box candidate with party link|
  |party      = Libertarian Party (United States)
  |candidate  = Jonathan Dine
  |votes      = 5,238
  |percentage = 2.61%
  |change     = -3.35
  }}
{{Election box candidate with party link|
  |party      = Green Party (United States)
  |candidate  = Johnathan McFarland
  |votes      = 1,970
  |percentage = 0.98%
  |change     = +0.98
  }}
{{Election box candidate with party link|
  |party      = Constitution Party (United States)
  |candidate  = Fred Ryman
  |votes      = 1,355
  |percentage = 0.67%
  |change     = +0.67
  }}
{{Election box end}}
{{Election box begin no change| title=U.S. Senate — Missouri — (2012)<ref>{{cite web |title=2012 Missouri Senate Results |url=https://www.politico.com/2012-election/results/senate/missouri/#county29183 |website=POLITICO |language=en}}</ref>}}
{{Election box candidate with party link no change|
 |party      = Democratic Party (United States)
 |candidate  = '''[[Claire McCaskill]]'''
 |votes      = '''89,993'''
 |percentage = '''49.10%'''
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Republican Party (United States)
 |candidate  = Todd Akin
 |votes      = 82,278
 |percentage = 44.90%
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Libertarian Party (United States)
 |candidate  = Jonathan Dine
 |votes      = 10,924
 |percentage = 6.0%
 |change     = 
}}
{{Election box end}}
{{Election box begin no change| title=U.S. Senate — Missouri — (2010)<ref>{{cite web |title=St. Charles County 2010 Election Results |url=https://www.sccmo.org/ArchiveCenter/ViewFile/Item/405}}</ref>}}
{{Election box candidate with party link no change|
 |party      = Republican Party (United States)
 |candidate  = '''[[Roy Blunt]]'''
 |votes      = '''73,695'''
 |percentage = '''59.09%'''
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Democratic Party (United States)
 |candidate  = Robin Carnahan 
 |votes      = 43,955
 |percentage = 35.24%
 |change     = 
}}
{{Election box candidate with party link no change|
 |party      = Libertarian Party (United States)
 |candidate  = Jonathan Dine
 |votes      = 10,924
 |percentage = 6.0%
 |change     = 
}}
{{Election box end}}

Part of St. Charles County is included in [[MO-02|Missouri's 2nd Congressional District]] and is currently represented by [[Ann Wagner]] in the [[United States House of Representatives|U.S. House of Representatives]].
{{Election box begin|title=U.S. House of Representatives — Missouri's 2nd Congressional District — St. Charles County (2020)}}
{{Election box candidate with party link|
  |party      = Republican Party (United States)
  |candidate  = '''Ann Wagner''' 
  |votes      = '''45,941'''
  |percentage = '''57.38%'''
  |change     = 
  }}
{{Election box candidate with party link|
  |party      = Democratic Party (United States)
  |candidate  = Jill Schupp
  |votes      = 31,239
  |percentage = 39.02%
  |change     = 
  }}
{{Election box candidate with party link|
  |party      = Libertarian Party (United States)
  |candidate  = Martin Schulte
  |votes      = 2,821
  |percentage = 3.52%
  |change     = 
  }}
{{Election box end}}
{{Election box begin|title=U.S. House of Representatives&nbsp;— Missouri's 2nd Congressional District&nbsp;— St. Charles County (2018)<ref name=ENR />}}
{{Election box winning candidate with party link no change
| party      = Republican Party (United States)
| candidate  = Ann Wagner 
| votes      = 37,875
| percentage = 57.5%
|change     = 
}}
{{Election box candidate with party link no change
| party      = Democratic Party (United States)
| candidate  = Cort VanOstran
| votes      = 26,782
| percentage = 40.6%
|change     = 
}}
{{Election box candidate with party link no change
| party      = Libertarian Party (United States)
| candidate  = Tony Kirk
| votes      = 956
| percentage = 1.5%
|change     = 
}}
{{Election box candidate with party link no change
| party      = Green Party (United States)
| candidate  = David Arnold
| votes      = 304
| percentage = 0.5%
|change     = 
}}
{{Election box candidate with party link no change
| party      = Independent (United States)
| candidate  = Ken Newhouse (write-in)
| votes      = 0
| percentage = 0.0%
|change     = 
}}
{{Election box total no change
| votes      = 65,917
| percentage = 100.0%
|change     = 
}}
{{Election box hold with party link no change
| winner = Republican Party (United States)
}}
{{Election box end}}

Most of St. Charles County is included in [[MO-03|Missouri's 3rd Congressional District]] and is currently represented by [[Blaine Luetkemeyer]] (R-[[St. Elizabeth, Missouri|St. Elizabeth]]) in the [[United States House of Representatives|U.S. House of Representatives]].
{{Election box begin|title=U.S. House of Representatives — Missouri's 3rd Congressional District — St. Charles County (2020)}}
{{Election box candidate with party link||party=Republican Party (United States)|candidate='''Blaine Luetkemeyer'''|votes='''84,071'''|percentage='''61.74%'''|change=}}
{{Election box candidate with party link||party=Democratic Party (United States)|candidate=Megan Rezabek|votes=49,315|percentage=36.22%|change=}}
{{Election box candidate with party link||party=Libertarian Party (United States)|candidate=Leonard J Steinman II|votes=2,631|percentage=1.93%|change=}}
{{Election box end}}
{{Election box begin|title=U.S. House of Representatives&nbsp;— Missouri's 3rd Congressional District&nbsp;— St. Charles County (2018)<ref name=ENR />}}
{{Election box winning candidate with party link no change
  |party      = Republican Party (United States)
  |candidate  = Blaine Luetkemeyer 
  |votes      = 61,751
  |percentage = 57.77%
  }}
{{Election box candidate with party link
  |party      = Democratic Party (United States)
  |candidate  = Katy Geppert
  |votes      = 43,070
  |percentage = 40.30%
  }}
{{Election box candidate with party link
  |party      = Libertarian Party (United States)
  |candidate  = Donald V. Stolle
  |votes      = 2,062
  |percentage = 1.93%
  }}
{{Election box total no change
| votes      = 106,883
| percentage = 100.0%
}}
{{Election box hold with party link no change
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Sticky header}}
{{PresHead|place=St. Charles County, Missouri|source=<ref>{{Cite web|url=http://uselectionatlas.org/RESULTS|title=Dave Leip's Atlas of U.S. Presidential Elections|last=Leip|first=David|website=uselectionatlas.org|access-date=March 26, 2018}}</ref>}}
<!-- PresRow should be {{PresRow|Year|Winning party|GOP vote #|Dem vote #|3rd party vote #|State}} -->
{{PresRow|2024|Republican|130,588|92,226|4,594|Missouri}}
{{PresRow|2020|Republican|128,389|89,530|4,647|Missouri}}
{{PresRow|2016|Republican|121,650|68,626|12,908|Missouri}}
{{PresRow|2012|Republican|110,784|71,838|3,744|Missouri}}
{{PresRow|2008|Republican|102,550|84,183|2,224|Missouri}}
{{PresRow|2004|Republican|95,826|66,855|807|Missouri}}
{{PresRow|2000|Republican|72,114|53,806|2,766|Missouri}}
{{PresRow|1996|Republican|47,705|41,369|13,172|Missouri}}
{{PresRow|1992|Republican|38,673|37,263|30,627|Missouri}}
{{PresRow|1988|Republican|50,005|29,286|209|Missouri}}
{{PresRow|1984|Republican|47,784|17,617|0|Missouri}}
{{PresRow|1980|Republican|36,050|20,668|3,050|Missouri}}
{{PresRow|1976|Republican|26,105|22,063|536|Missouri}}
{{PresRow|1972|Republican|25,677|11,034|0|Missouri}}
{{PresRow|1968|Republican|13,533|10,374|5,752|Missouri}}
{{PresRow|1964|Democratic|9,020|14,530|0|Missouri}}
{{PresRow|1960|Democratic|10,888|11,890|0|Missouri}}
{{PresRow|1956|Republican|9,462|7,618|0|Missouri}}
{{PresRow|1952|Republican|8,451|6,493|20|Missouri}}
{{PresRow|1948|Democratic|5,976|6,049|39|Missouri}}
{{PresRow|1944|Republican|7,050|4,880|36|Missouri}}
{{PresRow|1940|Republican|7,792|5,334|50|Missouri}}
{{PresRow|1936|Democratic|5,156|5,903|1,009|Missouri}}
{{PresRow|1932|Democratic|3,664|6,911|162|Missouri}}
{{PresRow|1928|Republican|5,404|5,081|22|Missouri}}
{{PresRow|1924|Republican|4,668|2,364|865|Missouri}}
{{PresRow|1920|Republican|6,645|2,472|96|Missouri}}
{{PresRow|1916|Republican|3,518|1,914|51|Missouri}}
{{PresRow|1912|Republican|2,350|1,792|654|Missouri}}
{{PresRow|1908|Republican|3,480|1,979|79|Missouri}}
{{PresRow|1904|Republican|3,203|1,788|100|Missouri}}
{{PresRow|1900|Republican|3,324|2,343|54|Missouri}}
{{PresRow|1896|Republican|3,173|2,448|30|Missouri}}
{{PresRow|1892|Republican|2,522|2,485|37|Missouri}}
{{PresFoot|1888|Republican|2,668|2,381|18|Missouri}}

===Federal politics===
St. Charles County has long been a Republican stronghold despite being an urban county, likely due to being the wealthiest county in Missouri. 

Despite this, it did vote for [[2020 Missouri Amendment 2|Medicaid expansion in 2020]], [[2022 Missouri Amendment 3|legal recreational marijuana in 2022]], and [[2024 Missouri Amendment 3|legal abortion in 2024]]. It was also one of the few counties in Missouri to shift towards the Democrats from 2020 to 2024.

====2016 Missouri presidential primary results====
'''Republican'''

[[Donald Trump]] won the most votes in St. Charles County, with 41.50 percent. U.S. Senator [[Ted Cruz]] (R-[[Texas]]) came in second with 38.87 percent, Governor [[John Kasich]] (R-[[Ohio]]) placed third with 10.70 percent, and U.S. Senator [[Marco Rubio]] (R-[[Florida]]) was fourth with 7.10 percent.

'''Democratic'''

U.S. Senator [[Bernie Sanders]] (I-[[Vermont]]) won the primary with 54.32 percent to former [[United States Secretary of State|Secretary of State]] [[Hillary Clinton]]'s 44.80 percent.

====2012 Missouri presidential primary results====
'''Republican'''

Former U.S. Senator [[Rick Santorum]] (R-[[Pennsylvania]]) won the most votes in St. Charles County, with 56.29 percent. Former Governor [[Mitt Romney]] (R-[[Massachusetts]]) came in second with 25.43 percent, and former U.S. Representative [[Ron Paul]] (R-[[Texas]]) was third with 12.69 percent.

'''Democratic'''

With incumbent President [[Barack Obama]] facing no serious opposition, few St. Charles County voters voted in the Democratic primary; Obama won 87.83 percent.

====2008 Missouri presidential primary results====
{{main|2008 Missouri Republican presidential primary}}
'''Republican'''

Former Governor [[Mitt Romney]] (R-[[Massachusetts]]) won the most votes in St. Charles County, with 37.72 percent. U.S. Senator [[John McCain]] (R-[[Arizona]]) came in second with 34.95 percent, former Governor [[Mike Huckabee]] (R-[[Arkansas]]) placed third with 21.83 percent, and U.S. Representative [[Ron Paul]] (R-[[Texas]]) was fourth with 3.83 percent.
{{main|2008 Missouri Democratic presidential primary}}
'''Democratic'''

Former U.S. Senator [[Hillary Clinton]] (D-[[New York (state)|New York]]) received a total of 23,611 votes, more than any candidate from either party in St. Charles County during the 2008 presidential primary.