Obama responds to accusations about his political action committee Hopefund.
DES MOINES, Iowa (CNN) – Democratic presidential candidate Barack Obama denied allegations from rival Hillary Clinton's campaign Sunday that his political action committee Hopefund was used to bribe public officials in early voting states.
"Everything that we've done is in exact accordance with the law," said the Illinois senator at a press conference. "Unless they can show that it hasn't been, I suggest they focus on trying to get their supporters to caucus in Iowa."
Earlier in the day, Clinton's communications director Howard Wolfson called Obama's PAC a 'slush fund.' Obama fired back, adding that some of Hopefund's contributions even went to supporters of Clinton's campaign.
"I think that folks from some of the other campaigns are reading the polls and starting to get stressed and issuing a whole range of outlandish accusations," he said.
A Des Moines Register poll released this weekend indicates that Obama holds a slight lead in the first-in-the-nation caucus state. Obama leads the pack with 28 percent, while Clinton is close behind at 25 percent - within the poll's margin of error.
Obama also attributed some of Hopefund's actions to the fact that he had not been planning to run for president as long as "some of the other candidates have been planning for it."
"By the time we announced that I was running, there was still money left over, which we used to contribute to candidates all across the country to help build a Democratic majority," he said.
The Clinton campaign took issue with that as well.
In a press release, Clinton spokesman Phil Singer said Obama is "re-writing history," adding that his comments are "fundamentally at odds with what his teachers, family, classmates and staff have said about his plans to run for President."
"Sen. Obama's campaign rhetoric is getting in the way of his reality."
Shortly after that, another response came from team Obama.
"I'm sure tomorrow they'll attack him for being a flip-flopper because he told his second grade teacher he wanted to be an astronaut," said Obama spokesman Bill Burton.
Both candidates were in Des Moines Sunday morning following Saturday night's Iowa Brown and Black Presidential Forum.
The Des Moines Register poll also indicated that fellow Democratic opponent John Edwards had the support of 23 percent of the 500 likely Democratic caucus-goers surveyed. The poll was conducted November 25-28 and has a margin of error of plus or minus 4.4 percent.
-CNN Iowa Producer Chris Welch