New York: Senator Bernie Sanders' presidential campaign raised more than $US33 million ($45.2 million) in the final three months of 2015, as his wide base of small-amount donors enabled him to come within $US4 million of the amount raised by Hillary Clinton, his rival for the Democratic nomination, his campaign said on Saturday.
Senator Sanders, from Vermont, has now raised $US73 million for his nomination fight, his aides said in a news release.
The campaign said more than a million individual donors had made more than 2.5 million contributions, passing US President Barack Obama's record for the amount of individual donations, which was set at the end of 2011.
"This people-powered campaign is revolutionising American politics," Jeff Weaver, Senator Sanders' campaign manager, said in a news release accompanying the release of the figures.
Senator Sanders' spending on the campaign also appears to have shot up - the release said the campaign has $US28.4 million in cash left from the $US73 million raised.
The release announcing the haul was replete with references to other candidates, and began with "unlike others", a veiled shot at Mrs Clinton, who raised $US37 million in the last quarter and has taken in more than $US112 million in donations overall for the nominating fight.
Senator Sanders' campaign has aggressively targeted and courted low-dollar donors, developing a deep network of people it could keep tapping for new contributions.
Mrs Clinton, by contrast, struggled in the second and third quarters of the year to establish a low-dollar donor base, relying primarily on fundraisers with a higher ticket price to bring in donations.
Two of the Republican candidates, senator Ted Cruz of Texas and Ben Carson, have released their fundraising totals for the quarter, with Senator Cruz raising $US20 million, a two-thirds increase from his previous quarter, and Dr Carson raising $US23 million.
New York Times