Sanders raised $44 million in March, breaking his own record in February of about $43.5 million, according to Politico. Clinton, meanwhile, raised $29.5 million.

The Sanders campaign has continued to emphasize its fundraising roots in small donors—a narrative that the Clinton campaign has begun to echo. “What this campaign is doing is bringing together millions of people contributing an average of just $27 each to take on a billionaire class which is so used to buying elections,” Sanders said in a statement.

Clinton campaign manager Robby Mook said that more than half of the month’s fundraising came from grassroots donations online.”By making smart investments and beating our first quarter fundraising goal by nearly 50 percent, we’ve been able to build a nearly insurmountable pledged delegate lead and earned 2.5 million more votes than our opponent,” Mook said in a statement to Politico. “As Hillary Clinton has progressed through the primary, we’ve seen a surge of grassroots support across the country and are thrilled that we now have more than one million contributors to this campaign, most of whom have given less than $100.”