Published: Jan 31, 2012 9:00 PM EST

LONE TREE, Colo. (AP) - Aides to Rick Santorum say his campaign raised $4.2 million in January and has $1.1 million in the bank.
    
They say the Republican presidential candidate benefited from a surge in fundraising after he was declared the winner of the leadoff nominating contest, Iowa's caucuses. He campaigned on a shoestring in Iowa and didn't spend a lot of money on ads in New Hampshire, South Carolina or Florida.
    
Florida's primary is Tuesday but Santorum has largely conceded the state to better-financed rivals Newt Gingrich and Mitt Romney. Instead, he was campaigning in Colorado and Nevada, where the next nominating contests will be held.

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