Watch: Bernie Sanders Holds Surprising Rally Outside Childhood Home Days Before Crucial New York Primary

Bernie Sanders came home today—literally. The Democratic candidate stopped by his childhood home in Flatbush, Brooklyn, where he held a fairly impromptu rally announced a few hours earlier and attended by nearly a thousand. Outside, he gave a speech that focused on women's rights, civil rights, gay rights and the progress we have made since he left. He urged the crowd to "think big, not small."

"There is a Democratic primary coming up soon. If we win here we’re gonna win other states. New York will help us make it to the White House and transform a nation,” Sanders told the crowd.

Although Sanders is trailing Clinton, he already has delegates in New York, like Sean Robertson, a Brooklyn resident and digital outreach specialist.

"We've had local meetings in Brooklyn since at least as far back as September and coordinated the petitions with help from the Working Families Party [which has endorsed Sanders]," Robertson told AlterNet. "New York in general was one of the most thoroughly organized in the country from what I recall, even pretty early on."

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The New York Primary is April 19. Brooklyn hosts the next Democratic debate on April 14.