February 19, 2012
MITT ROMNEY: Built a $200 million fortune in his private equity career.
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BARACK OBAMA: Book royalties alone ran to $2.5 million in 2008.
NEWT GINGRICH: A $7 million fortune, with an up to $1 million revolving line of credit at Tiffany.
Robert F. Bukaty/AP
RON PAUL: Worth as much as $5.2 million.
RICK SANTORUM: Disclosed last week that he earns roughly $1 million a year.