Newt Gingrich’s campaign announced in a tweet Tuesday that he raised $10 million in the fourth quarter of 2011 and has pulled in another $5 million in January.

The newly disclosed fundraising numbers represent a big uptick for the former House speaker, who raised less than $1 million in the third quarter and was deeply in debt. The campaign had previously said it raised $9 million in the fourth quarter but is adjusting that up slightly.

So far, though, the amount has not allowed him to compete financially with former Massachusetts governor Mitt Romney, who announced earlier this month that he raised $24 million in the fourth quarter and had $19 million cash on hand at the end of the year.

Rep. Ron Paul (R-Texas) also outraised Gingrich in the fourth quarter, pulling in $13 million.

The campaign of former Pennsylvania senator Rick Santorum says it has raised $4.2 million in January and has $1.1 million cash on hand. No word yet on his fourth-quarter numbers, though.

Also, Texas Gov. Rick Perry, who dropped out of the race after New Hampshire, saw his fundraising fall off precipitously in the fourth quarter, raising less than $3 million. The Fix calculates that Perry spent well more than $1,000 for each vote he got in the race.

And another former candidate, Rep. Michele Bachmann (R-Minn.) raised $1.7 million in the fourth quarter and was more than $1 million in debt as of Dec. 31. Bachmann dropped out after disappointing finish in Iowa’s Jan. 3 caucuses.

The fourth quarter runs from Oct. 1 to Dec. 31. Reports are due by midnight tonight.

There is no word yet on how much money the Gingrich campaign had left — either at the end of December or the end of January — but in a memo released Monday, a top Gingrich aide wrote that the campaign “is now in a position where we will be able to respond to Romney’s ads in every state moving forward” and that it aims to stay in the race through the GOP convention.

Gingrich has benefitted significantly from a super PAC supporting his campaign that has gotten a $10 million infusion from casino mogul Sheldon Adelson.