In 2006, the Republican presidential hopeful earned about $200,000 from his Senate salary and book royalties.
From January 2010 to August 2011, he earned at least $1.3 million as he cashed in on his 16 years in Congress by working as a corporate consultant, political pundit and board member.
The financial disclosure report Santorum filed last August shows how his income has changed. Many voters are taking their first hard look at the former congressman and two-term senator from Pennsylvania following his near-win in Iowa's caucuses.
His resume contrasts with campaign rhetoric that casts him as an outsider who would shake up Washington and a candidate with hardscrabble roots.
