Former House speaker Newt Gingrich says he's pressing on despite more troubles for his embattled presidential campaign. The Republican candidate's entire senior staff resigned en masse on Thursday.

Two months before the Iowa straw poll and currently polling in the single digits, Gingrich said he has no plans to drop out of the race for the Republican presidential nomination.

"The American people have to make a very big decision in 2012," Gingrich said.

"Do they want really, dramatic, deep change in Washington? Change that leads us back to a balanced budget? Or do they want politics as usual. Now, that's why I'm running," he said.

What's next for Newt Gingrich's campaign? CBN News spoke with Regent University distinguished professor of governement Charles Dunn about this.  Click play for his comments following the updated report.

Speaking outside his house in suburban Virginia one day after several key aides quit his campaign, Gingrich blamed their departure on a difference in philosophy.

"There is a fundamental strategic difference between the traditional consulting community and the kind of campaign I want to run," he said.

"Now we'll find out over the next year who's right. But I believe we live in a time when Americans are genuinely frightened for the country's future," he told reporters. "And when the country really wants to have leadership that talks with them honestly and isn't automatically doing the old politics."

Gingrich vowed to campaign "very intensely."

He said he wants to run a "solution-oriented campaign" that appeals to every American who is concerned about the direction the country is heading -- not just Republicans and conservatives. Some conservatives, however, have charged that his campaign is undisciplined.

"Not only was it too much, but I think there was no indication amongst the senior staff that anything was going to change," said Rich Galen, a Republican strategist.

In addition, multiple sources complained that Gingrich's wife had too much power and hindered the campaign.

"We make decisions as a couple. I think most couples would find that refreshing and not a problem," the former House speaker said.

Gingrich launched his presidential bid last month, and sources say he's only been on the campaign trail 12 of the last 36 days, a pattern described as a constant source of frustration for his staff.