Four more states began their early voting processes on Tuesday: Indiana, New Mexico, Wyoming and the major swing state of Ohio.

Here is everything you need to know about casting a ballot in each of the states.

All eyes on the Senate race in Ohio

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.

Ohio’s Senate race is a toss-up and the presidential race is ranked Likely R on the Fox News Power Rankings.

Meanwhile, New Mexico is also in the “likely” column, both at the presidential and senate level. The state delivered Biden an 11-point win in 2020, but Latino or Hispanic voters made up 35% of the state’s electorate in the 2020 election, and those voters’ support for the Democrat ticket has wavered in recent polls.

Republicans would need to run up their margins with these voters all across the state and keep Harris at bay in places like Doña Ana County, home to Albuquerque and which last voted for Biden by 18 points, to pull off a victory.

Key downballot races in today’s early voting states

Voting also begins today in four House districts ranked Lean or Toss Up on the Fox News Power Rankings. For a full list of competitive races, see the latest Senate and House rankings.

• Indiana’s 1st District: Democrat Rep. Frank Mrvan has held this northwest Indiana district since the last presidential election; he won it by 5.6 points in the midterms. This year, he faces Republican Lake County Councilman Randy Niemeyer. It’s Lean D in the Power Rankings.
• New Mexico’s 2nd District: New Mexico’s 2nd District occupies most of the southwest land area of the state. It includes Las Cruces and parts of Albuquerque, but it also has a chunk of the rural vote. Democrat Rep. Gabe Vasquez won the district by just 1,350 votes in the midterms; this year, he faces the seat’s former Republican occupant, Yvette Herrell. This is a Power Rankings Toss Up.
• Ohio’s 9th District: This northwestern Ohio seat has been held by populist Democrat Rep. Marcy Kaptur since 1983, but her margins have shrunk as Ohio has drifted right. She faces conservative Republican state Rep. Derek Merrin on the ballot this year; it’s another Power Rankings Toss Up.
• Ohio’s 13th District: Finally, the northeastern 13th District includes Youngstown and parts of Akron; it has been represented by Democrat Rep. Emilia Sykes since 2023. Sykes faces Republican former state Sen. Kevin Coughlin this year. It’s also a Toss Up.

How to vote in Indiana

This is a guide to registration and early voting. For comprehensive and up-to-date information on voter eligibility, processes and deadlines, please go to Vote.gov and the election website for Indiana.

Voting by mail

Indiana began absentee voting on Tuesday. Residents do not need to provide an excuse in order to receive a ballot. State officials must receive a ballot request by Oct. 24, and that ballot must be delivered to state officials by Nov. 5.

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Early in-person voting

Indiana offers early in-person voting beginning Oct. 8 and running through Nov. 4.

Voter registration

Indiana residents must have registered to vote by Oct. 7.

How to vote in New Mexico

This is a guide to registration and early voting. For comprehensive and up-to-date information on voter eligibility, processes and deadlines, please go to Vote.gov and the election website for New Mexico.

Voting by mail

New Mexico began absentee voting on Tuesday. Residents do not need to provide an excuse in order to receive a ballot. State officials must receive a ballot request by Oct. 22, and that ballot must be delivered to state officials by Nov. 5.

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Early in-person voting

New Mexico offers early in-person voting beginning Oct. 8 and running through Nov. 2.

Voter registration

New Mexico residents must register to vote by the end of Tuesday.

How to vote in Ohio

This is a guide to registration and early voting. For comprehensive and up-to-date information on voter eligibility, processes and deadlines, please go to Vote.gov and the election website for Ohio.

Voting by mail

Ohio began absentee voting on Tuesday. Residents do not need to provide an excuse in order to receive a ballot. State officials must receive a ballot request by Oct. 29, and that ballot must be delivered to state officials by Nov. 5.

Early in-person voting

Ohio offers early in-person voting beginning Oct. 8 and running through Nov. 3.

Voter registration

Ohio residents must have registered to vote by Oct. 7.

How to vote in Wyoming

This is a guide to registration and early voting. For comprehensive and up-to-date information on voter eligibility, processes and deadlines, please go to Vote.gov and the election website for Wyoming.

Voting by mail

Wyoming began absentee voting on Tuesday. Residents do not need to provide an excuse in order to receive a ballot. State officials must receive a ballot request by Nov. 4, and that ballot must be delivered to state officials by Nov. 5.

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Early in-person voting

Wyoming offers early in-person voting beginning Oct. 8 and running through Nov. 4.

Voter registration

Wyoming residents must register to vote by mail by Oct. 21. They can register to vote in person at any time during early voting or on election day.