Newt Gingrich’s presidential campaign said Wednesday that it has raised $9 million in the fourth quarter.

The total is a significant improvement from previous quarters for the former House speaker, whose campaign had been left for dead at one point but was rejuvenated last month.

But it’s not on-par with what other GOP frontrunners have raised in previous quarters, and Gingrich has struggled to compete on the airwaves with his GOP rivals in Iowa. The lack of advertising from his campaign suggests it has spent heavily to raise money and keep operations going.

Mitt Romney and Rick Perry both raised at least $14 million in the third quarter and had cash reserves of around $15 million as of Sept. 30. They have been blanketing the airwaves far more than Gingrich’s campaign, which seems to have suffered in the polls thanks to its advertising deficit.

Gingrich raised less than $1 million in the third quarter and around $2 million in the second quarter. By the end of the third quarter, he was about $1 million in debt.

Other campaigns have yet to release their fundraising figures for the fourth quarter, which doesn’t end until Saturday. The period covers Oct. 1 through Dec. 31.

Reports are due at the end of January.