Five states and Washington, DC, will end early voting on Sunday

Here is how you can still cast your ballot early, and a breakdown of the states' key races.

Ohio is home to one of the most competitive Senate races on the map.

Democrat Sen. Sherrod Brown has won the Midwestern state three times, but with Trump pushing White working-class voters toward the GOP and record spending from both parties, this is set to be a tight race. Brown faces Republican businessman Bernie Moreno.

Republicans have made inroads in the northeastern and heavily industrial areas bordering Pennsylvania. Trumbull County flipped to the GOP in 2016, and Trump increased his margin to 10 points in 2020; Mahoning County flipped in 2020 by almost two points. These counties played a key role in Trump's statewide wins.

Democrats are performing better than ever in the "three C's": Cleveland, Columbus and Cincinnati. These areas have the highest percentages of college-educated voters. President Biden won the counties home to these cities by double-digit margins in 2020, with roughly 30-point wins in Franklin (Columbus) and Cuyahoga (Cleveland).

Unlike in other competitive states, Republicans still hold up in Ohio's suburban and exurban areas, particularly those surrounding Cincinnati.