Storms are expected to hit much of the Eastern United States on Tuesday, which could depress Election Day turnout in some places.

A strong cold front could cause rain and wind anywhere along the Eastern Seaboard, from the Florida Panhandle all the way up to Maine, said Tim Loftus, a data scientist and meteorologist at AccuWeather. There will most likely be severe thunderstorms from North Carolina up to South Jersey. And in the Northeast, especially New York and Pennsylvania, winds could reach 50 miles per hour, Mr. Loftus said.

The same broad storm system is expected to cause a mixture of rain and snow in the Great Lakes region and Northern Plains, including parts of Michigan, Minnesota and North Dakota.

“Just about the entire eastern half of the country” will be affected, said Ari Sarsalari, a meteorologist for the Weather Channel. Much of the I-95 corridor will be rainy, and the wind will be particularly bad in the Midwest, including the Great Lakes region and the Ohio Valley.