Organizers for the massive gun control march that took place in Washington, D.C., over the weekend — which reportedly cost an estimated $5 million — say they have millions left in contributions that will go to lobbying and activism.

Deena Katz, a Hollywood producer who was involved with planning the March for Our Lives, told NPR that donations are still being counted, and that the event’s organizers have “several million dollars” that will go in part to lobbying efforts.

“I know we’ve raised enough that these kids are gonna have several million dollars that they can start their fight after the march,” she told the news outlet.

Student survivors of the mass shooting last month at Florida’s Marjory Stoneman Douglas High School  organized the march, which drew hundreds of thousands to the nation’s capital on Saturday, to demand political action on gun control.

{mosads}The movement gained worldwide traction, with an estimated total attendance of more than a million people at sibling marches held around the country. Thousands of people also gathered in other countries to march in solidarity.

The march’s organizers reportedly raised nearly $3.5 million on a GoFundMe page, but told NPR that donations are still rolling in.

Several celebrities contributed large donations, including George and Amal Clooney, and Oprah Winfrey. Both the Clooneys and Winfrey donated $500,000 to the cause.

The activists who organized the march have made it clear that they are planning to continue the fight for gun control through lobbying, voter registration efforts and other political action.

At least 4,000 people registered to vote on Saturday, the day of the march.