The United States Political Violence (USPV) database records numerous riots around elections during the mid-19th century. In April 1855, for example, hundreds of nativists “invaded” a German area of Cincinnati, Ohio, and destroyed more than a thousand ballots. Subsequent fighting led to two deaths. In August of that year, nativist Protestants attacked German and Irish neighborhoods in Louisville, Kentucky, killing at least 20. In Baltimore, election violence became routine in the 1850s, with 30 dead and 350 wounded in the 1856 election alone