(CNN) - Former House Speaker Newt Gingrich spent a second day trying to campaign in Iowa but fending off questions about his relationship with mortgage giant Freddie Mac.
The former House Speaker has surged to the top of Republican presidential polls over the last month but is now forced to play defense against reports of his relationship with Freddie Mac. Gingrich Group was paid between $1.6 million and $1.8 million to lobby Republicans in Congress on behalf of the government-backed mortgage lender, CNN has confirmed.
Questioned about the reports on Wednesday in Urbandale, Gingrich said that his consulting company was paid by Freddie Mac for "strategic advice over a long period of time."
CNN confirmed Gingrich was paid by Freddie Mac during two periods - from 1999 to 2002 and 2006 to 2008. Bloomberg first reported the amount of payments made to Gingrich on Tuesday.
The GOP heavyweight said he was unsure of how much Gingrich Group was paid by Freddie Mac but that his team has gone back to "check" the amount. Asked if his campaign would make the figure public, Gingrich replied, "To the degree we can, sure."
Freddie Mac confirmed to CNN that Gingrich was a consultant and not a lobbyist.
Gingrich was consulted about Freddie’s efforts to become more transparent about “risk and capital management” procedures, risk information disclosure, and how those efforts would be received in Congress, specifically by Republicans, according to a former official who worked for Freddie Mac during both of his stints.
During his first stint, Freddie Mac wanted to “bond” with Bush administration officials on the idea of creating a “home ownership society” – getting more Latinos and other minorities into home ownership - and worked with Gingrich on that.
In Gingrich’s second stint, Freddie Mac officials tried to get him to write “white papers” on how good the “model” was for government-sponsored enterprises like Fannie Mae and Freddie because free-market Republicans didn’t like that model, the official said. Freddie Mac officials were frustrated with Gingrich, the source said, because they had a hard time getting him to write anything.
The official and others that CNN talked to disagreed with Gingrich’s characterization of himself as a “historian.”
According to a fact sheet released by Gingrich's campaign Wednesday, "Gingrich made a decision after resigning that he would never be a lobbyist so that nobody would ever question the genuine nature of his advice and perspectives. This prohibition against lobbying was made very clear to all Gingrich Group clients and strict internal protocols were developed to prevent lobbying."
While the candidate said on Wednesday his campaign would do what they could to release more documents about his time at Freddie Mac, his press secretary R.C. Hammond confirmed Wednesday night that the fact sheet was the "last word" from the campaign.
Gingrich's popularity has soared in recent weeks, catapulting the GOP presidential contender into second place in recent national polls. A CNN/ORC International poll released Monday showed Gingrich leapfrogging businessman Herman Cain into second place among GOP candidates.
Gingrich has blamed Fannie Mae and Freddie Mac for distorting the home loan market and Democrats for having close ties to Freddie Mac.
"If you want to put people in jail… You ought to start with Barney Frank and Chris Dodd. And let's look at the politicians who created the environment, the politicians who profited from the environment, and the politicians who put this country in trouble," Gingrich said during the Washington Post/Bloomberg GOP debate on Oct. 11.
"In Barney Frank's case, go back and look at the lobbyists he was close to at Freddie Mac," Gingrich argued.
When asked if the reports would taint him as being a "Washington insider" in an election driven by a decidedly anti-Washington mood, Gingrich objected.
"It reminds people that I know a great deal about Washington and if you want to change Washington, we just tried four years of amateur ignorance and it didn't work very well," he said. "So having somebody who knows Washington might be a really good thing."
Earlier Tuesday, Bloomberg reported that Gingrich was hired to gain GOP support on Capitol Hill as the government-backed mortgage company came under fire during the subprime mortgage meltdown.
Asked Tuesday by CNN about the report, Gingrich said, "I did no lobbying of any kind. That's all I've got to say about it."
CNN's Brian Todd, Shannon Travis and Rebecca Stewart contributed to this report.