Democratic presidential candidate Sen. Bernie Sanders drew 10,000 supporters, the largest crowd of his campaign thus far, according to reports.

"Tonight, we have more people at any meeting for a candidate of president of the United States than any other candidate,” Sanders told his fans at Veterans Memorial Coliseum in Madison, Wis., according to the Associated Press.

Sanders used the occasion to slam Wisconsin Gov. Scott Walker, a likely Republican White House hopeful, for Walker’s battles against state labor unions.

Sanders continued beating his populist drum, to the delight of his supporters. "The big money interests — Wall Street, corporate America, all of these guys — have so much power that no president can defeat them unless there is an organized grassroots movement making them an offer they can't refuse," he said.