The 1855 Wisconsin gubernatorial election was held on November 6, 1855. Republican Party candidate Coles Bashford was declared the winner after a court challenge, defeating Democratic incumbent William A. Barstow.

Barstow was initially declared the winner of the election, having apparently received just over 50% of the vote. However, Bashford and the Wisconsin Attorney General, George Baldwin Smith, filed suit in the Wisconsin Supreme Court in the case Atty. Gen. ex rel. Bashford v. Barstow. They alleged that Barstow's allies had created fraudulent election returns in several fake precincts in Wisconsin's northern counties. The court found that Bashford had won the election, and was entitled to the governorship. Before the court could formally remove him from office, Barstow resigned, leaving his Lieutenant Governor Arthur MacArthur Sr., as acting Governor, until Bashford was sworn in four days later.

Results These are the results as originally certified by the Board of State Canvassers. Barstow ultimately did take office for the new term prior to the court rendering its decision that Bashford was the true winner.

Results by county There were no votes from Kewaunee County, La Crosse County, La Pointe County, and St. Croix County. Dunn County would not vote for a Democrat again until 1970 and Waupaca County would not vote for a Democrat again until 1932. County William A. BarstowDemocratic Coles BashfordRepublican ScatteringWrite-in Margin Total votes cast # % # % # % # %Adams37638.10%61161.90%00.00%-235-23.81%987Bad Ax29849.34%30650.66%00.00%-8-1.32%604Brown33562.50%20137.50%00.00%13425.00%536Buffalo11593.50%86.50%00.00%10786.99%123Calumet37754.24%31845.76%00.00%598.49%695Chippewa12161.11%7738.89%00.00%4422.22%198Clark4586.54%713.46%00.00%3873.08%52Columbia90636.34%1,58063.38%70.28%-674-27.04%2,493Crawford16357.60%12042.40%00.00%4315.19%283Dane2,36749.73%2,38750.15%60.13%-20-0.42%4,760Dodge2,36451.97%2,18548.03%00.00%1793.93%4,549Door00.00%81100.00%00.00%-81-100.00%81Douglas8891.67%88.33%00.00%8083.33%96Dunn12474.25%4325.75%00.00%8148.50%167Fond du Lac1,72246.40%1,98953.60%00.00%-267-7.19%3,711Grant1,11241.19%1,58858.81%00.00%-476-17.63%2,700Green60034.78%1,12365.10%20.12%-523-30.32%1,725Iowa1,09258.71%76841.29%00.00%32417.42%1,860Jackson11439.31%17660.69%00.00%-62-21.38%290Jefferson1,55847.07%1,74652.75%60.18%-188-5.68%3,310Kenosha61038.01%99561.99%00.00%-385-23.99%1,605Lafayette1,19961.74%74338.26%00.00%45623.48%1,942Manitowoc94164.06%52835.94%00.00%41328.11%1,469Marathon10453.61%8845.36%21.03%168.25%194Marquette85841.91%1,18757.99%20.10%-329-16.07%2,047Milwaukee4,62772.52%1,74927.41%40.06%28.7845.11%6,380Monroe9230.16%21369.84%00.00%-121-39.67%305Oconto13159.82%8840.18%00.00%4319.63%219Outagamie38247.69%41451.69%50.62%-32-4.00%801Ozaukee1,58685.36%27114.59%10.05%1,31570.78%1,858Pierce5527.23%14772.77%00.00%-92-45.54%202Polk14988.17%2011.83%00.00%12976.33%169Portage23536.21%41463.79%00.00%-179-27.58%649Racine1,34451.91%1,24548.09%00.00%993.82%2,589Richland18629.34%44870.66%00.00%-262-41.32%634Rock1,01827.43%2,69072.49%30.08%-1,672-45.06%3,711Sauk48233.61%95066.25%20.14%-468-32.64%1,434Shawano3846.34%4453.66%00.00%-6-7.32%82Sheboygan1,30654.08%1,10845.88%10.04%1988.20%2,415Trempealeau1827.69%4772.31%00.00%-29-44.62%65Walworth1,11234.83%2,08165.17%00.00%-969-30.35%3,193Washington2,30181.31%52818.66%10.04%1,77362.65%2,830Waukesha1,51239.42%2,32460.58%00.00%-812-21.17%3,836Waupaca80667.67%38532.33%00.00%42135.35%1,191Waushara24834.16%47865.84%00.00%-230-31.68%726Winnebago1,13840.18%1,69159.71%30.11%-553-19.53%2,832Total36,33550.08%36,19849.86%450.06%1570.22%72,598

Counties that flipped from Whig to Democratic Brown Marathon Oconto

Counties that flipped from Independent to Democratic Iowa

Counties that flipped from Democratic to Republican Adams Bad Ax Columbia Dane Fond du Lac Green Jackson Outagamie Pierce Portage Richland Sauk

Counties that flipped from Independent to Republican Grant Jefferson Kenosha Marquette Rock Walworth Waukesha Waushara Winnebago

See also 1857 Minnesota gubernatorial election

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