ChainCatcher message, on the day of the U.S. election, several key battleground states were hit by a strong cold air mass, leading to heavy rainfall and severe stormy weather. From East Texas to the border between Missouri and Illinois, including St. Louis, the highest rainfall amounts were recorded. Many flash flood warnings were also issued in these areas. While the rain will slowly shift eastward, the rain that has already fallen may impact voters trying to head out to the polls in the morning. The front will continue to move eastward, bringing showers to battleground states such as Minnesota, Wisconsin, and Michigan, as well as southern Louisiana.
In previous elections, rainfall has led to a slight decrease in voter turnout. Among the seven battleground states, Wisconsin is experiencing the worst weather, with the Storm Prediction Center issuing severe storm threat levels ranging from 1 to 5 for much of the state. Widespread showers and even thunderstorms may bring gusts exceeding 60 miles per hour and brief tornadoes.