Hillary Clinton got one piece of good news this week: An increasing number of  young voters can tell her policies apart from Donald Trump’s.

For Clinton, that’s no small feat.

In July, Tom Steyer’s group NextGen Climate released the first battleground poll of millennial voters this election cycle. The takeaway was a startling number: roughly four out of 10 voters age 34 and younger saw no difference between the two candidates on the issues most important to them.

Now a new follow-up poll by NextGen Climate/Project New America in 11 swing states has found some improvement in Clinton’s numbers in just the month since the last poll was done. More see a difference between the two candidates:

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NextGen Climate/Project New America Battleground Millennial Survey

Clinton also gained five points since July among likely millennial voters who say they intend to vote for her: 48 percent now back Clinton compared to 23 percent for Trump in a four-way race.

Her gains among Sanders’ most die-hard voters are worth looking at. Around the time of the Democratic National Convention in July, one in five millennials were still devoted Sanders supporters, and most of them didn’t see a difference between Clinton and Trump. Now, the Sanders holdouts have shrunk from 21 to 16 percent, and slightly fewer Sanders supporters still claim there’s no difference between the two major-party candidates.