President Trump closed the gap on presumptive Democratic presidential nominee Joe Biden's lead among registered voters in a CNN poll published Sunday evening. And across 15 battleground states, Biden is 49-48 points ahead over Trump.

Why it matters: CNN's last poll released showed Biden with a 14-point lead over the president in June — prompting Trump's re-election campaign to demand the network apologize. In the latest poll, conducted by SSRS, 50% of 1,108 people surveyed said they'd vote for Biden, compared to 46% who plan to back Trump. But 54% disapprove of the job Trump is doing.

Read the full survey via DocumentCloud:

Go deeper:

• 58% of Biden voters say vote is more "against" Trump than "for" Biden, poll finds
• Nate Silver's FiveThirtyEight model gives Trump 27% chance of re-election