(NEXSTAR) — President Joe Biden and former President Donald Trump are poised to meet Thursday night in Atlanta, where they will engage in a debate that could sway undecided voters and define the battleground for the 2024 presidential race.

Most U.S. adults plan to watch some element of tonight’s debate to see how both candidates address hot-button topics ahead of the November 5 election, according to a new poll from The Associated Press-NORC Center for Public Affairs Research.

For those unsold on Biden or Trump, the most pressing issue is the economy, according to a Nexstar survey. On Monday and Tuesday, ahead of Thursday night’s debate, 1,109 respondents – who self-identified as undecided voters – named their top issues when it comes to influencing their vote this fall.

Of those who are undecided, 31% said the candidates’ positions on the economy is the most important issue.

The second-most important issue was immigration and border security (24%), followed by Medicare and Social Security (13%), abortion (10%), and climate change (6%).

Those who identified as Democrats or Republicans had other issues top of mind. The 2,900 Democrats surveyed were most likely to be concerned about Medicare and Social Security, while the top issue for the 4,448 Republicans who responded was immigration and border security. The economy was second-most important for both groups.

While most of America will be watching Thursday night to hear Biden and Trump’s stances on these key issues, each are entering the debate with low favorability ratings. About 6 in 10 U.S. adults say they have a very or somewhat unfavorable view of Biden, and a similar number have a negative view of Trump, according to The Associated Press’ recent poll.

Trump and Biden haven’t been on the same stage or even spoken since their last debate weeks before the 2020 presidential election. Trump skipped Biden’s inauguration after leading an unprecedented and unsuccessful effort to overturn his loss to Biden that culminated in the Jan. 6 Capitol insurrection by his supporters.

The debate, hosted by CNN, starts at 9 p.m. Eastern Time in Atlanta.

The Nexstar survey was distributed to users of Nexstar Media Group websites across the country. It is not scientific in nature and instead showcases a gauge of our viewers’ sentiments. More than 9,000 people participated in the survey from June 24 to June 25.

The Associated Press contributed to this report.