Former White House Chief of Staff Rahm Emanuel has raised a whopping $10.6 million for his bid to be mayor of Chicago, his campaign announced Thursday.

Emanuel also transferred $1.1 million from his congressional campaign to bring his war chest to $11.7 million, his spokesman Ben LaBolt tweeted.

Three of Emanuel's top rivals trail far behind him in fundraising. Former Chicago schools chief Gery Chico announced he has raised $2.5 million, and former Sen. Carol Moseley Braun (D-Ill.) has collected $850,000, according to media reports. City Clerk Miguel del Valle has raised $150,000.

Multiple polls show Emanuel as the front-runner in the nonpartisan Feb. 22 primary. But if no candidate garners over 50 percent of the vote, a runoff will be held in April.

During his time in Congress, when he served as Democratic Congressional Campaign Committee chairman, Emanuel was known for his fundraising prowess.

Under state campaign rules, candidates could receive unlimited donations from individuals before Dec. 31. But after Jan. 1, each donor is limited to $5,000 in contributions, according to the Chicago Sun-Times.

Emanuel has not skimped when it comes to campaign spending. He is paying $150,000 for a 30-second television spot during Sunday's National Football Conference championship game between the Chicago Bears and the Green Bay Packers.