Bernie Sanders has broken the fundraising record for most contributions at this point in a presidential campaign, surpassing 2.3 million donations.

According to a Dec. 20 post on Sanders’ campaign website, the previous record-holder was Barack Obama, who had logged 2,209,636 donations by Dec. 31, 2011 during his reelection bid. Many of these contributions are from small donors: according to the Sanders website, the average donation that came in during the third Democratic debate on Saturday was less than $25.

Sanders raised more than $26 million in the third quarter of 2015, according to the New York Times.

As TIME’s Sam Frizell reported in September after learning of strong fundraising numbers for the Vermont Senator, “Sanders routinely points to his average donation size and number of contributors as evidence that he is building a grassroots ‘political revolution.'”

Read Next: Bernie Sanders Attracts Some Big Campaign Money Despite Denunciations

Get our Politics Newsletter. The headlines out of Washington never seem to slow. Subscribe to The D.C. Brief to make sense of what matters most. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Write to Tessa Berenson at tessa.berenson@time.com.