Democratic presidential candidate Bernie SandersBernie SandersHeck's rejection of Trump imperils Nevada Senate race Goldman CEO: 'I’m supportive of Hillary Clinton' How a new Clinton presidency will change American politics forever MORE's campaign has raised nearly $4 million since its weekend victories, the campaign told reporters Monday during a call.
Sanders won elections on Saturday in Washington, Hawaii and Alaska.
Sanders won all three states by a large margin. In the Washington caucuses, Sanders took 72.7 percent to Clinton's 27.1 percent. In Alaska's caucuses, he beat Clinton 81.6 to 18.4 percent. In Hawaii, Sanders won with 69.8 percent of the vote.
On Monday, a top Sanders aide said the Democratic race will hinge on superdelegates.