Donald Trump and Hillary Clinton will meet for their first one-on-one debate Monday night, during which both candidates will work to convince voters that they are fit to be commander in chief and capable of ushering in a new era of American prosperity.

Depending on how both candidates perform, the debate could prove to make a difference in key battleground states where either candidate is polling within the margin of error against the other and needs to make inroads with certain demographics in order to pull ahead. Experts predict the debate could draw as many as 100 million viewers, some of whom are likely to be assessing both candidates and their policies for the first time this cycle.