Seven Battleground stateswho could potentially switch to either the Democrats or the Republicans, holds the key to the presidency Election 2024 as voters make their choice between former President Donald Trump and Vice President Kamala Harris.

Both Harris and Trump have repeatedly visited these battleground states, where CBS News poll shows that the candidates were practically undecided in the run-up to election day.

List of battleground states to watch in the 2024 presidential election

CBS News looks at these as the battleground states in the 2024 presidential election:

• Arizona
• Georgia
• Michigan
• Nevada
• North Carolina
• Pennsylvania
• Wisconsin

Arizona has 11 electoral votes and polls close at 9:00 p.m. ET on Election Day. Trump won Arizona in 2016 but then narrowly lost it to President Biden in 2020.

Georgia has 16 electoral votes and polls close at 7 p.m. ET. Trump won the state in 2016, but in 2020 Mr. Biden beat him by less than 12,000 votes – the first time a Democratic candidate has won the state since Bill Clinton in 1992 Trump and more than a dozen Allies deals with one criminal conspiracy Overturning Georgia's 2020 results is now the focus of one Election interference Fulton County case; Trump denies wrongdoing.

Michigan's 15 electoral votes went to Trump in 2016 after nearly three decades of supporting Democrats in the presidential election. In 2020, the state flipped, with Mr. Biden claiming victory. Michigan is part of the so-called “blue wall” of Midwestern states considered crucial for Democrats. Rep. Debbie Dingell She recently said she believes her state will remain competitive until the last vote is counted on Election Day. The first polls in Michigan close at 8:00 p.m. ET, but some are in a different time zone and close at 9:00 p.m. ET.

Nevada has voted Democratic in the last four presidential elections. With six electoral votes, Nevada has the smallest total of the seven presidential election states. Polls in the state close at 10 p.m. ET.

North Carolina is still dealing with the devastating aftermath from Hurricane Helene. Both candidates have been visiting since the storm. Since 1968, Democrats have won the state's 16 electoral votes only twice, most recently in 2008 when voters backed Barack Obama. In 2020, Trump defeated Mr. Biden in the state by just over a point and also defeated Hillary Clinton in the state in 2016. Polls in North Carolina close at 7:30 p.m. ET.

PennsylvaniaWith its 19 electoral votes, it is a crucial battleground for Harris and Trump. Mr. Biden captured the state in 2020, while Trump won there in 2016. Harris and Trump each visited the state at least 20 times in the months leading up to the election. Polls in Pennsylvania close at 8:00 p.m. ET.

Wisconsin Voters supported Democrats for decades until Trump flipped the state in 2016, securing its 10 electoral votes. In 2020, voters returned as Mr. Biden won the state. In the last two elections, the state was decided by less than 1%. Polls in Wisconsin close at 9 p.m. ET.

The latest polls from contested states

CBS News' Battlefield Tracker provides the latest estimates of support for Harris and Trump in these states as of the end of the 2024 campaign. Estimates are based on CBS News/YouGov polling and analysis.

The following results also include Nebraska's competitive 2nd Congressional District; Nebraska is one of two states, along with Maine, where vote splitting is possible.

Technically, what is a battleground state?

A “battleground state” – sometimes called a “swing state” – has a population of voters who are almost evenly divided politically before the election. While many states vote relatively consistently for either Democrats or Republicans, both parties see an opportunity to win in the battleground and are investing a lot of money and time campaigning in these states.

How have battlefield conditions changed over the years?

Here's who voters in battleground states supported in past elections:

Arizona:

• 2020: Joe Biden (Democrat)
• 2016: Donald Trump (Republican)
• 2012: Mitt Romney (Republican)
• 2008: John McCain (Republican)
• 2004: George W. Bush (Republican)
• 2000: George W. Bush (Republican)

Georgia:

• 2020: Joe Biden (Democrat)
• 2016: Donald Trump (Republican)
• 2012: Mitt Romney (Republican)
• 2008: John McCain (Republican)
• 2004: George W. Bush (Republican)
• 2000: George W. Bush (Republican)

Michigan:

• 2020: Joe Biden (Democrat)
• 2016: Donald Trump (Republican)
• 2012: Barack Obama (Democrat)
• 2008: Barack Obama (Democrat)
• 2004: John Kerry (Democrat)
• 2000: Al Gore (Democrat)

Nevada:

• 2020: Joe Biden (Democrat)
• 2016: Hillary Clinton (Democrat)
• 2012: Barack Obama (Democrat)
• 2008: Barack Obama (Democrat)
• 2004: George W. Bush (Republican)
• 2000: George W. Bush (Republican)

North Carolina:

• 2020: Donald Trump (Republican)
• 2016: Donald Trump (Republican)
• 2012: Mitt Romney (Republican)
• 2008: Barack Obama (Democrat)
• 2004: George W. Bush (Republican)
• 2000: George W. Bush (Republican)

Pennsylvania:

• 2020: Joe Biden (Democrat)
• 2016: Donald Trump (Republican)
• 2012: Barack Obama (Democrat)
• 2008: Barack Obama (Democrat)
• 2004: John Kerry (Democrat)
• 2000: Al Gore (Democrat)

Wisconsin:

• 2020: Joe Biden (Democrat)
• 2016: Donald Trump (Republican)
• 2012: Barack Obama (Democrat)
• 2008: Barack Obama (Democrat)
• 2004: John Kerry (Democrat)
• 2000: Al Gore (Democrat)